diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 748f3ac3..08c61255 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -18,7 +18,7 @@ build:
 
 tools:
     external_code_coverage:
-        timeout: 3600
+        timeout: 600
 
 build_failure_conditions:
     - 'elements.rating(<= C).new.exists'                        # No new classes/methods with a rating of C or worse allowed
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27d72197..22fd8c3d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Fix RATE, PRICE, XIRR, and XNPV Functions [#1456](https://github.com/PHPOffice/PhpSpreadsheet/pull/1456)
 - Save Excel 2010+ functions properly in XLSX [#1461](https://github.com/PHPOffice/PhpSpreadsheet/pull/1461)
 - Several improvements in HTML writer [#1464](https://github.com/PHPOffice/PhpSpreadsheet/pull/1464)
+- Fix incorrect behaviour when saving XLSX file with drawings [#1462](https://github.com/PHPOffice/PhpSpreadsheet/pull/1462),
+- Fix Crash while trying setting a cell the value "123456\n" [#1476](https://github.com/PHPOffice/PhpSpreadsheet/pull/1481)
 
 ### Changed
 
diff --git a/samples/Basic/07_Reader.php b/samples/Basic/07_Reader.php
index 4d9bd79e..67b3ae56 100644
--- a/samples/Basic/07_Reader.php
+++ b/samples/Basic/07_Reader.php
@@ -17,3 +17,4 @@ $helper->logRead('Xlsx', $filename, $callStartTime);
 
 // Save
 $helper->write($spreadsheet, __FILE__);
+unlink($filename);
diff --git a/samples/Basic/16_Csv.php b/samples/Basic/16_Csv.php
index de753d56..15bbf0d4 100644
--- a/samples/Basic/16_Csv.php
+++ b/samples/Basic/16_Csv.php
@@ -1,13 +1,15 @@
 <?php
 
-use PhpOffice\PhpSpreadsheet\IOFactory;
+use PhpOffice\PhpSpreadsheet\Reader\Csv as CsvReader;
+use PhpOffice\PhpSpreadsheet\Writer\Csv as CsvWriter;
 
 require __DIR__ . '/../Header.php';
 $spreadsheet = require __DIR__ . '/../templates/sampleSpreadsheet.php';
 
 $helper->log('Write to CSV format');
 /** @var \PhpOffice\PhpSpreadsheet\Writer\Csv $writer */
-$writer = IOFactory::createWriter($spreadsheet, 'Csv')->setDelimiter(',')
+$writer = new CsvWriter($spreadsheet);
+$writer->setDelimiter(',')
     ->setEnclosure('"')
     ->setSheetIndex(0);
 
@@ -19,13 +21,15 @@ $helper->logWrite($writer, $filename, $callStartTime);
 $helper->log('Read from CSV format');
 
 /** @var \PhpOffice\PhpSpreadsheet\Reader\Csv $reader */
-$reader = IOFactory::createReader('Csv')->setDelimiter(',')
+$reader = new CsvReader();
+$reader->setDelimiter(',')
     ->setEnclosure('"')
     ->setSheetIndex(0);
 
 $callStartTime = microtime(true);
 $spreadsheetFromCSV = $reader->load($filename);
 $helper->logRead('Csv', $filename, $callStartTime);
+unlink($filename);
 
 // Write Xlsx
 $helper->write($spreadsheetFromCSV, __FILE__, ['Xlsx']);
@@ -33,7 +37,7 @@ $helper->write($spreadsheetFromCSV, __FILE__, ['Xlsx']);
 // Write CSV
 $filenameCSV = $helper->getFilename(__FILE__, 'csv');
 /** @var \PhpOffice\PhpSpreadsheet\Writer\Csv $writerCSV */
-$writerCSV = IOFactory::createWriter($spreadsheetFromCSV, 'Csv');
+$writerCSV = new CsvWriter($spreadsheetFromCSV);
 $writerCSV->setExcelCompatibility(true);
 
 $callStartTime = microtime(true);
diff --git a/samples/Basic/20_Read_Xls.php b/samples/Basic/20_Read_Xls.php
index 9e5fa014..daeaf664 100644
--- a/samples/Basic/20_Read_Xls.php
+++ b/samples/Basic/20_Read_Xls.php
@@ -17,6 +17,7 @@ $helper->logWrite($writer, $filename, $callStartTime);
 $callStartTime = microtime(true);
 $spreadsheet = IOFactory::load($filename);
 $helper->logRead('Xls', $filename, $callStartTime);
+unlink($filename);
 
 // Save
 $helper->write($spreadsheet, __FILE__);
diff --git a/samples/Basic/24_Readfilter.php b/samples/Basic/24_Readfilter.php
index 844996f2..ab1c2e41 100644
--- a/samples/Basic/24_Readfilter.php
+++ b/samples/Basic/24_Readfilter.php
@@ -3,6 +3,7 @@
 namespace PhpOffice\PhpSpreadsheet;
 
 use PhpOffice\PhpSpreadsheet\Reader\IReadFilter;
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx as XlsxReader;
 use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
 
 require __DIR__ . '/../Header.php';
@@ -29,10 +30,11 @@ class MyReadFilter implements IReadFilter
 }
 
 $helper->log('Load from Xlsx file');
-$reader = IOFactory::createReader('Xlsx');
+$reader = new XlsxReader();
 $reader->setReadFilter(new MyReadFilter());
 $callStartTime = microtime(true);
 $spreadsheet = $reader->load($filename);
+unlink($filename);
 $helper->logRead('Xlsx', $filename, $callStartTime);
 $helper->log('Remove unnecessary rows');
 $spreadsheet->getActiveSheet()->removeRow(2, 18);
diff --git a/samples/Basic/28_Iterator.php b/samples/Basic/28_Iterator.php
index 4aec7a92..104dc47f 100644
--- a/samples/Basic/28_Iterator.php
+++ b/samples/Basic/28_Iterator.php
@@ -1,21 +1,22 @@
 <?php
 
-use PhpOffice\PhpSpreadsheet\IOFactory;
-use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx as XLsxReader;
+use PhpOffice\PhpSpreadsheet\Writer\Xlsx as XLsxWriter;
 
 require __DIR__ . '/../Header.php';
 
 $sampleSpreadsheet = require __DIR__ . '/../templates/sampleSpreadsheet.php';
 $filename = $helper->getTemporaryFilename();
-$writer = new Xlsx($sampleSpreadsheet);
+$writer = new XlsxWriter($sampleSpreadsheet);
 $callStartTime = microtime(true);
 $writer->save($filename);
 $helper->logWrite($writer, $filename, $callStartTime);
 
 $callStartTime = microtime(true);
-$reader = IOFactory::createReader('Xlsx');
+$reader = new XlsxReader();
 $spreadsheet = $reader->load($filename);
 $helper->logRead('Xlsx', $filename, $callStartTime);
+unlink($filename);
 $helper->log('Iterate worksheets');
 foreach ($spreadsheet->getWorksheetIterator() as $worksheet) {
     $helper->log('Worksheet - ' . $worksheet->getTitle());
diff --git a/samples/Basic/44_Worksheet_info.php b/samples/Basic/44_Worksheet_info.php
index 33c0cd05..57822369 100644
--- a/samples/Basic/44_Worksheet_info.php
+++ b/samples/Basic/44_Worksheet_info.php
@@ -24,3 +24,5 @@ var_dump($sheetList);
 
 $helper->log('Worksheet Names:');
 var_dump($sheetInfo);
+
+unlink($filename);
diff --git a/samples/Chart/34_Chart_update.php b/samples/Chart/34_Chart_update.php
index a4287927..5d725c49 100644
--- a/samples/Chart/34_Chart_update.php
+++ b/samples/Chart/34_Chart_update.php
@@ -1,20 +1,22 @@
 <?php
 
-use PhpOffice\PhpSpreadsheet\IOFactory;
-use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx as XlsxReader;
+use PhpOffice\PhpSpreadsheet\Writer\Xlsx as XlsxWriter;
 
 require __DIR__ . '/../Header.php';
 
 // Create temporary file that will be read
 $sampleSpreadsheet = require __DIR__ . '/../templates/chartSpreadsheet.php';
 $filename = $helper->getTemporaryFilename();
-$writer = new Xlsx($sampleSpreadsheet);
+$writer = new XlsxWriter($sampleSpreadsheet);
+$writer->setIncludeCharts(true);
 $writer->save($filename);
 
 $helper->log('Load from Xlsx file');
-$reader = IOFactory::createReader('Xlsx');
+$reader = new XlsxReader();
 $reader->setIncludeCharts(true);
 $spreadsheet = $reader->load($filename);
+unlink($filename);
 
 $helper->log('Update cell data values that are displayed in the chart');
 $worksheet = $spreadsheet->getActiveSheet();
@@ -31,7 +33,7 @@ $worksheet->fromArray(
 
 // Save Excel 2007 file
 $filename = $helper->getFilename(__FILE__);
-$writer = IOFactory::createWriter($spreadsheet, 'Xlsx');
+$writer = new XlsxWriter($spreadsheet);
 $writer->setIncludeCharts(true);
 $callStartTime = microtime(true);
 $writer->save($filename);
diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index 0be9ab6f..cdfe7b53 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -37,6 +37,10 @@ class Calculation
     const RETURN_ARRAY_AS_VALUE = 'value';
     const RETURN_ARRAY_AS_ARRAY = 'array';
 
+    const FORMULA_OPEN_FUNCTION_BRACE = '{';
+    const FORMULA_CLOSE_FUNCTION_BRACE = '}';
+    const FORMULA_STRING_QUOTE = '"';
+
     private static $returnArrayAsType = self::RETURN_ARRAY_AS_VALUE;
 
     /**
@@ -2593,11 +2597,11 @@ class Calculation
         for ($i = 0; $i < $strlen; ++$i) {
             $chr = mb_substr($formula, $i, 1);
             switch ($chr) {
-                case '{':
+                case self::FORMULA_OPEN_FUNCTION_BRACE:
                     $inBraces = true;
 
                     break;
-                case '}':
+                case self::FORMULA_CLOSE_FUNCTION_BRACE:
                     $inBraces = false;
 
                     break;
@@ -2626,10 +2630,10 @@ class Calculation
         if (self::$localeLanguage !== 'en_us') {
             $inBraces = false;
             //    If there is the possibility of braces within a quoted string, then we don't treat those as matrix indicators
-            if (strpos($formula, '"') !== false) {
+            if (strpos($formula, self::FORMULA_STRING_QUOTE) !== false) {
                 //    So instead we skip replacing in any quoted strings by only replacing in every other array element after we've exploded
                 //        the formula
-                $temp = explode('"', $formula);
+                $temp = explode(self::FORMULA_STRING_QUOTE, $formula);
                 $i = false;
                 foreach ($temp as &$value) {
                     //    Only count/replace in alternating array entries
@@ -2640,7 +2644,7 @@ class Calculation
                 }
                 unset($value);
                 //    Then rebuild the formula string
-                $formula = implode('"', $temp);
+                $formula = implode(self::FORMULA_STRING_QUOTE, $temp);
             } else {
                 //    If there's no quoted strings, then we do a simple count/replace
                 $formula = preg_replace($from, $to, $formula);
@@ -2741,7 +2745,7 @@ class Calculation
                 return $value;
             }
             //    Return strings wrapped in quotes
-            return '"' . $value . '"';
+            return self::FORMULA_STRING_QUOTE . $value . self::FORMULA_STRING_QUOTE;
         //    Convert numeric errors to NaN error
         } elseif ((is_float($value)) && ((is_nan($value)) || (is_infinite($value)))) {
             return Functions::NAN();
@@ -2760,7 +2764,7 @@ class Calculation
     public static function unwrapResult($value)
     {
         if (is_string($value)) {
-            if ((isset($value[0])) && ($value[0] == '"') && (substr($value, -1) == '"')) {
+            if ((isset($value[0])) && ($value[0] == self::FORMULA_STRING_QUOTE) && (substr($value, -1) == self::FORMULA_STRING_QUOTE)) {
                 return substr($value, 1, -1);
             }
             //    Convert numeric errors to NAN error
@@ -3227,8 +3231,8 @@ class Calculation
                 }
 
                 return '{ ' . implode($rpad, $returnMatrix) . ' }';
-            } elseif (is_string($value) && (trim($value, '"') == $value)) {
-                return '"' . $value . '"';
+            } elseif (is_string($value) && (trim($value, self::FORMULA_STRING_QUOTE) == $value)) {
+                return self::FORMULA_STRING_QUOTE . $value . self::FORMULA_STRING_QUOTE;
             } elseif (is_bool($value)) {
                 return ($value) ? self::$localeBoolean['TRUE'] : self::$localeBoolean['FALSE'];
             }
@@ -3282,34 +3286,34 @@ class Calculation
      */
     private function convertMatrixReferences($formula)
     {
-        static $matrixReplaceFrom = ['{', ';', '}'];
+        static $matrixReplaceFrom = [self::FORMULA_OPEN_FUNCTION_BRACE, ';', self::FORMULA_CLOSE_FUNCTION_BRACE];
         static $matrixReplaceTo = ['MKMATRIX(MKMATRIX(', '),MKMATRIX(', '))'];
 
         //    Convert any Excel matrix references to the MKMATRIX() function
-        if (strpos($formula, '{') !== false) {
+        if (strpos($formula, self::FORMULA_OPEN_FUNCTION_BRACE) !== false) {
             //    If there is the possibility of braces within a quoted string, then we don't treat those as matrix indicators
-            if (strpos($formula, '"') !== false) {
+            if (strpos($formula, self::FORMULA_STRING_QUOTE) !== false) {
                 //    So instead we skip replacing in any quoted strings by only replacing in every other array element after we've exploded
                 //        the formula
-                $temp = explode('"', $formula);
+                $temp = explode(self::FORMULA_STRING_QUOTE, $formula);
                 //    Open and Closed counts used for trapping mismatched braces in the formula
                 $openCount = $closeCount = 0;
                 $i = false;
                 foreach ($temp as &$value) {
                     //    Only count/replace in alternating array entries
                     if ($i = !$i) {
-                        $openCount += substr_count($value, '{');
-                        $closeCount += substr_count($value, '}');
+                        $openCount += substr_count($value, self::FORMULA_OPEN_FUNCTION_BRACE);
+                        $closeCount += substr_count($value, self::FORMULA_CLOSE_FUNCTION_BRACE);
                         $value = str_replace($matrixReplaceFrom, $matrixReplaceTo, $value);
                     }
                 }
                 unset($value);
                 //    Then rebuild the formula string
-                $formula = implode('"', $temp);
+                $formula = implode(self::FORMULA_STRING_QUOTE, $temp);
             } else {
                 //    If there's no quoted strings, then we do a simple count/replace
-                $openCount = substr_count($formula, '{');
-                $closeCount = substr_count($formula, '}');
+                $openCount = substr_count($formula, self::FORMULA_OPEN_FUNCTION_BRACE);
+                $closeCount = substr_count($formula, self::FORMULA_CLOSE_FUNCTION_BRACE);
                 $formula = str_replace($matrixReplaceFrom, $matrixReplaceTo, $formula);
             }
             //    Trap for mismatched braces and trigger an appropriate error
@@ -3715,9 +3719,9 @@ class Calculation
                     }
 
                     $localeConstant = false;
-                    if ($opCharacter == '"') {
+                    if ($opCharacter == self::FORMULA_STRING_QUOTE) {
                         //    UnEscape any quotes within the string
-                        $val = self::wrapResult(str_replace('""', '"', self::unwrapResult($val)));
+                        $val = self::wrapResult(str_replace('""', self::FORMULA_STRING_QUOTE, self::unwrapResult($val)));
                     } elseif (is_numeric($val)) {
                         if ((strpos($val, '.') !== false) || (stripos($val, 'e') !== false) || ($val > PHP_INT_MAX) || ($val < -PHP_INT_MAX)) {
                             $val = (float) $val;
@@ -4058,7 +4062,7 @@ class Calculation
                                 $result = '#VALUE!';
                             }
                         } else {
-                            $result = '"' . str_replace('""', '"', self::unwrapResult($operand1) . self::unwrapResult($operand2)) . '"';
+                            $result = self::FORMULA_STRING_QUOTE . str_replace('""', self::FORMULA_STRING_QUOTE, self::unwrapResult($operand1) . self::unwrapResult($operand2)) . self::FORMULA_STRING_QUOTE;
                         }
                         $this->debugLog->writeDebugLog('Evaluation Result is ', $this->showTypeDetails($result));
                         $stack->push('Value', $result);
@@ -4078,9 +4082,15 @@ class Calculation
                                 $cellIntersect[$row] = array_intersect_key($operand1[$row], $operand2[$row]);
                             }
                         }
-                        $cellRef = Coordinate::stringFromColumnIndex(min($oCol) + 1) . min($oRow) . ':' . Coordinate::stringFromColumnIndex(max($oCol) + 1) . max($oRow);
-                        $this->debugLog->writeDebugLog('Evaluation Result is ', $this->showTypeDetails($cellIntersect));
-                        $stack->push('Value', $cellIntersect, $cellRef);
+                        if (count(Functions::flattenArray($cellIntersect)) === 0) {
+                            $this->debugLog->writeDebugLog('Evaluation Result is ', $this->showTypeDetails($cellIntersect));
+                            $stack->push('Error', Functions::null(), null);
+                        } else {
+                            $cellRef = Coordinate::stringFromColumnIndex(min($oCol) + 1) . min($oRow) . ':' .
+                                Coordinate::stringFromColumnIndex(max($oCol) + 1) . max($oRow);
+                            $this->debugLog->writeDebugLog('Evaluation Result is ', $this->showTypeDetails($cellIntersect));
+                            $stack->push('Value', $cellIntersect, $cellRef);
+                        }
 
                         break;
                 }
@@ -4284,7 +4294,7 @@ class Calculation
                         $branchStore[$storeKey] = self::$excelConstants[$excelConstant];
                     }
                     $this->debugLog->writeDebugLog('Evaluating Constant ', $excelConstant, ' as ', $this->showTypeDetails(self::$excelConstants[$excelConstant]));
-                } elseif ((is_numeric($token)) || ($token === null) || (is_bool($token)) || ($token == '') || ($token[0] == '"') || ($token[0] == '#')) {
+                } elseif ((is_numeric($token)) || ($token === null) || (is_bool($token)) || ($token == '') || ($token[0] == self::FORMULA_STRING_QUOTE) || ($token[0] == '#')) {
                     $stack->push('Value', $token);
                     if (isset($storeKey)) {
                         $branchStore[$storeKey] = $token;
@@ -4329,7 +4339,7 @@ class Calculation
         if (is_string($operand)) {
             //    We only need special validations for the operand if it is a string
             //    Start by stripping off the quotation marks we use to identify true excel string values internally
-            if ($operand > '' && $operand[0] == '"') {
+            if ($operand > '' && $operand[0] == self::FORMULA_STRING_QUOTE) {
                 $operand = self::unwrapResult($operand);
             }
             //    If the string is a numeric value, we treat it as a numeric, so no further testing
@@ -4342,7 +4352,7 @@ class Calculation
                     return false;
                 } elseif (!Shared\StringHelper::convertToNumberIfFraction($operand)) {
                     //    If not a numeric or a fraction, then it's a text string, and so can't be used in mathematical binary operations
-                    $stack->push('Value', '#VALUE!');
+                    $stack->push('Error', '#VALUE!');
                     $this->debugLog->writeDebugLog('Evaluation Result is a ', $this->showTypeDetails('#VALUE!'));
 
                     return false;
@@ -4402,10 +4412,10 @@ class Calculation
         }
 
         //    Simple validate the two operands if they are string values
-        if (is_string($operand1) && $operand1 > '' && $operand1[0] == '"') {
+        if (is_string($operand1) && $operand1 > '' && $operand1[0] == self::FORMULA_STRING_QUOTE) {
             $operand1 = self::unwrapResult($operand1);
         }
-        if (is_string($operand2) && $operand2 > '' && $operand2[0] == '"') {
+        if (is_string($operand2) && $operand2 > '' && $operand2[0] == self::FORMULA_STRING_QUOTE) {
             $operand2 = self::unwrapResult($operand2);
         }
 
@@ -4570,7 +4580,7 @@ class Calculation
                     case '/':
                         if ($operand2 == 0) {
                             //    Trap for Divide by Zero error
-                            $stack->push('Value', '#DIV/0!');
+                            $stack->push('Error', '#DIV/0!');
                             $this->debugLog->writeDebugLog('Evaluation Result is ', $this->showTypeDetails('#DIV/0!'));
 
                             return false;
diff --git a/src/PhpSpreadsheet/Calculation/MathTrig.php b/src/PhpSpreadsheet/Calculation/MathTrig.php
index d92ba404..85f94cc2 100644
--- a/src/PhpSpreadsheet/Calculation/MathTrig.php
+++ b/src/PhpSpreadsheet/Calculation/MathTrig.php
@@ -1339,6 +1339,8 @@ class MathTrig
             // Is it a numeric value?
             if ((is_numeric($arg)) && (!is_string($arg))) {
                 $returnValue += $arg;
+            } elseif (Functions::isError($arg)) {
+                return $arg;
             }
         }
 
diff --git a/src/PhpSpreadsheet/Cell/DefaultValueBinder.php b/src/PhpSpreadsheet/Cell/DefaultValueBinder.php
index 3a676c4f..693446e6 100644
--- a/src/PhpSpreadsheet/Cell/DefaultValueBinder.php
+++ b/src/PhpSpreadsheet/Cell/DefaultValueBinder.php
@@ -65,6 +65,8 @@ class DefaultValueBinder implements IValueBinder
                 return DataType::TYPE_STRING;
             } elseif ((strpos($pValue, '.') === false) && ($pValue > PHP_INT_MAX)) {
                 return DataType::TYPE_STRING;
+            } elseif (!is_numeric($pValue)) {
+                return DataType::TYPE_STRING;
             }
 
             return DataType::TYPE_NUMERIC;
diff --git a/src/PhpSpreadsheet/Reader/Html.php b/src/PhpSpreadsheet/Reader/Html.php
index 5e12a2fb..2fe85b6f 100644
--- a/src/PhpSpreadsheet/Reader/Html.php
+++ b/src/PhpSpreadsheet/Reader/Html.php
@@ -933,7 +933,12 @@ class Html extends BaseReader
      */
     private function setBorderStyle(Style $cellStyle, $styleValue, $type): void
     {
-        [, $borderStyle, $color] = explode(' ', $styleValue);
+        if (trim($styleValue) === Border::BORDER_NONE) {
+            $borderStyle = Border::BORDER_NONE;
+            $color = null;
+        } else {
+            [, $borderStyle, $color] = explode(' ', $styleValue);
+        }
 
         $cellStyle->applyFromArray([
             'borders' => [
diff --git a/src/PhpSpreadsheet/Reader/Xlsx.php b/src/PhpSpreadsheet/Reader/Xlsx.php
index 77035a39..797e59ea 100644
--- a/src/PhpSpreadsheet/Reader/Xlsx.php
+++ b/src/PhpSpreadsheet/Reader/Xlsx.php
@@ -1000,12 +1000,13 @@ class Xlsx extends BaseReader
                                                 Settings::getLibXmlLoaderOptions()
                                             );
                                             $drawings = [];
-                                            foreach ($relsVML->Relationship as $ele) {
-                                                if ($ele['Type'] == 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/image') {
-                                                    $drawings[(string) $ele['Id']] = self::dirAdd($vmlRelationship, $ele['Target']);
+                                            if (isset($relsVML->Relationship)) {
+                                                foreach ($relsVML->Relationship as $ele) {
+                                                    if ($ele['Type'] == 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/image') {
+                                                        $drawings[(string) $ele['Id']] = self::dirAdd($vmlRelationship, $ele['Target']);
+                                                    }
                                                 }
                                             }
-
                                             // Fetch VML document
                                             $vmlDrawing = simplexml_load_string(
                                                 $this->securityScanner->scan($this->getFromZipArchive($zip, $vmlRelationship)),
diff --git a/src/PhpSpreadsheet/Shared/CodePage.php b/src/PhpSpreadsheet/Shared/CodePage.php
index b395293c..97cbfbbe 100644
--- a/src/PhpSpreadsheet/Shared/CodePage.php
+++ b/src/PhpSpreadsheet/Shared/CodePage.php
@@ -6,6 +6,65 @@ use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
 
 class CodePage
 {
+    private static $pageArray = [
+        0 => 'CP1252', //    CodePage is not always correctly set when the xls file was saved by Apple's Numbers program
+        367 => 'ASCII', //    ASCII
+        437 => 'CP437', //    OEM US
+        //720 => 'notsupported', //    OEM Arabic
+        737 => 'CP737', //    OEM Greek
+        775 => 'CP775', //    OEM Baltic
+        850 => 'CP850', //    OEM Latin I
+        852 => 'CP852', //    OEM Latin II (Central European)
+        855 => 'CP855', //    OEM Cyrillic
+        857 => 'CP857', //    OEM Turkish
+        858 => 'CP858', //    OEM Multilingual Latin I with Euro
+        860 => 'CP860', //    OEM Portugese
+        861 => 'CP861', //    OEM Icelandic
+        862 => 'CP862', //    OEM Hebrew
+        863 => 'CP863', //    OEM Canadian (French)
+        864 => 'CP864', //    OEM Arabic
+        865 => 'CP865', //    OEM Nordic
+        866 => 'CP866', //    OEM Cyrillic (Russian)
+        869 => 'CP869', //    OEM Greek (Modern)
+        874 => 'CP874', //    ANSI Thai
+        932 => 'CP932', //    ANSI Japanese Shift-JIS
+        936 => 'CP936', //    ANSI Chinese Simplified GBK
+        949 => 'CP949', //    ANSI Korean (Wansung)
+        950 => 'CP950', //    ANSI Chinese Traditional BIG5
+        1200 => 'UTF-16LE', //    UTF-16 (BIFF8)
+        1250 => 'CP1250', //    ANSI Latin II (Central European)
+        1251 => 'CP1251', //    ANSI Cyrillic
+        1252 => 'CP1252', //    ANSI Latin I (BIFF4-BIFF7)
+        1253 => 'CP1253', //    ANSI Greek
+        1254 => 'CP1254', //    ANSI Turkish
+        1255 => 'CP1255', //    ANSI Hebrew
+        1256 => 'CP1256', //    ANSI Arabic
+        1257 => 'CP1257', //    ANSI Baltic
+        1258 => 'CP1258', //    ANSI Vietnamese
+        1361 => 'CP1361', //    ANSI Korean (Johab)
+        10000 => 'MAC', //    Apple Roman
+        10001 => 'CP932', //    Macintosh Japanese
+        10002 => 'CP950', //    Macintosh Chinese Traditional
+        10003 => 'CP1361', //    Macintosh Korean
+        10004 => 'MACARABIC', //    Apple Arabic
+        10005 => 'MACHEBREW', //    Apple Hebrew
+        10006 => 'MACGREEK', //    Macintosh Greek
+        10007 => 'MACCYRILLIC', //    Macintosh Cyrillic
+        10008 => 'CP936', //    Macintosh - Simplified Chinese (GB 2312)
+        10010 => 'MACROMANIA', //    Macintosh Romania
+        10017 => 'MACUKRAINE', //    Macintosh Ukraine
+        10021 => 'MACTHAI', //    Macintosh Thai
+        10029 => 'MACCENTRALEUROPE', //    Macintosh Central Europe
+        10079 => 'MACICELAND', //    Macintosh Icelandic
+        10081 => 'MACTURKISH', //    Macintosh Turkish
+        10082 => 'MACCROATIAN', //    Macintosh Croatian
+        21010 => 'UTF-16LE', //    UTF-16 (BIFF8) This isn't correct, but some Excel writer libraries erroneously use Codepage 21010 for UTF-16LE
+        32768 => 'MAC', //    Apple Roman
+        //32769 => 'unsupported', //    ANSI Latin I (BIFF2-BIFF3)
+        65000 => 'UTF-7', //    Unicode (UTF-7)
+        65001 => 'UTF-8', //    Unicode (UTF-8)
+    ];
+
     /**
      * Convert Microsoft Code Page Identifier to Code Page Name which iconv
      * and mbstring understands.
@@ -14,123 +73,20 @@ class CodePage
      *
      * @return string Code Page Name
      */
-    public static function numberToName($codePage)
+    public static function numberToName(int $codePage): string
     {
-        switch ($codePage) {
-            case 367:
-                return 'ASCII'; //    ASCII
-            case 437:
-                return 'CP437'; //    OEM US
-            case 720:
-                throw new PhpSpreadsheetException('Code page 720 not supported.'); //    OEM Arabic
-            case 737:
-                return 'CP737'; //    OEM Greek
-            case 775:
-                return 'CP775'; //    OEM Baltic
-            case 850:
-                return 'CP850'; //    OEM Latin I
-            case 852:
-                return 'CP852'; //    OEM Latin II (Central European)
-            case 855:
-                return 'CP855'; //    OEM Cyrillic
-            case 857:
-                return 'CP857'; //    OEM Turkish
-            case 858:
-                return 'CP858'; //    OEM Multilingual Latin I with Euro
-            case 860:
-                return 'CP860'; //    OEM Portugese
-            case 861:
-                return 'CP861'; //    OEM Icelandic
-            case 862:
-                return 'CP862'; //    OEM Hebrew
-            case 863:
-                return 'CP863'; //    OEM Canadian (French)
-            case 864:
-                return 'CP864'; //    OEM Arabic
-            case 865:
-                return 'CP865'; //    OEM Nordic
-            case 866:
-                return 'CP866'; //    OEM Cyrillic (Russian)
-            case 869:
-                return 'CP869'; //    OEM Greek (Modern)
-            case 874:
-                return 'CP874'; //    ANSI Thai
-            case 932:
-                return 'CP932'; //    ANSI Japanese Shift-JIS
-            case 936:
-                return 'CP936'; //    ANSI Chinese Simplified GBK
-            case 949:
-                return 'CP949'; //    ANSI Korean (Wansung)
-            case 950:
-                return 'CP950'; //    ANSI Chinese Traditional BIG5
-            case 1200:
-                return 'UTF-16LE'; //    UTF-16 (BIFF8)
-            case 1250:
-                return 'CP1250'; //    ANSI Latin II (Central European)
-            case 1251:
-                return 'CP1251'; //    ANSI Cyrillic
-            case 0:
-                //    CodePage is not always correctly set when the xls file was saved by Apple's Numbers program
-            case 1252:
-                return 'CP1252'; //    ANSI Latin I (BIFF4-BIFF7)
-            case 1253:
-                return 'CP1253'; //    ANSI Greek
-            case 1254:
-                return 'CP1254'; //    ANSI Turkish
-            case 1255:
-                return 'CP1255'; //    ANSI Hebrew
-            case 1256:
-                return 'CP1256'; //    ANSI Arabic
-            case 1257:
-                return 'CP1257'; //    ANSI Baltic
-            case 1258:
-                return 'CP1258'; //    ANSI Vietnamese
-            case 1361:
-                return 'CP1361'; //    ANSI Korean (Johab)
-            case 10000:
-                return 'MAC'; //    Apple Roman
-            case 10001:
-                return 'CP932'; //    Macintosh Japanese
-            case 10002:
-                return 'CP950'; //    Macintosh Chinese Traditional
-            case 10003:
-                return 'CP1361'; //    Macintosh Korean
-            case 10004:
-                return 'MACARABIC'; //    Apple Arabic
-            case 10005:
-                return 'MACHEBREW'; //    Apple Hebrew
-            case 10006:
-                return 'MACGREEK'; //    Macintosh Greek
-            case 10007:
-                return 'MACCYRILLIC'; //    Macintosh Cyrillic
-            case 10008:
-                return 'CP936'; //    Macintosh - Simplified Chinese (GB 2312)
-            case 10010:
-                return 'MACROMANIA'; //    Macintosh Romania
-            case 10017:
-                return 'MACUKRAINE'; //    Macintosh Ukraine
-            case 10021:
-                return 'MACTHAI'; //    Macintosh Thai
-            case 10029:
-                return 'MACCENTRALEUROPE'; //    Macintosh Central Europe
-            case 10079:
-                return 'MACICELAND'; //    Macintosh Icelandic
-            case 10081:
-                return 'MACTURKISH'; //    Macintosh Turkish
-            case 10082:
-                return 'MACCROATIAN'; //    Macintosh Croatian
-            case 21010:
-                return 'UTF-16LE'; //    UTF-16 (BIFF8) This isn't correct, but some Excel writer libraries erroneously use Codepage 21010 for UTF-16LE
-            case 32768:
-                return 'MAC'; //    Apple Roman
-            case 32769:
-                throw new PhpSpreadsheetException('Code page 32769 not supported.'); //    ANSI Latin I (BIFF2-BIFF3)
-            case 65000:
-                return 'UTF-7'; //    Unicode (UTF-7)
-            case 65001:
-                return 'UTF-8'; //    Unicode (UTF-8)
+        if (array_key_exists($codePage, self::$pageArray)) {
+            return self::$pageArray[$codePage];
+        }
+        if ($codePage == 720 || $codePage == 32769) {
+            throw new PhpSpreadsheetException("Code page $codePage not supported."); //    OEM Arabic
         }
 
         throw new PhpSpreadsheetException('Unknown codepage: ' . $codePage);
     }
+
+    public static function getEncodings(): array
+    {
+        return self::$pageArray;
+    }
 }
diff --git a/src/PhpSpreadsheet/Shared/Date.php b/src/PhpSpreadsheet/Shared/Date.php
index fd49c1ec..9dc99292 100644
--- a/src/PhpSpreadsheet/Shared/Date.php
+++ b/src/PhpSpreadsheet/Shared/Date.php
@@ -4,10 +4,10 @@ namespace PhpOffice\PhpSpreadsheet\Shared;
 
 use DateTimeInterface;
 use DateTimeZone;
-use Exception;
 use PhpOffice\PhpSpreadsheet\Calculation\DateTime;
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
 use PhpOffice\PhpSpreadsheet\Cell\Cell;
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
 use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
 
 class Date
@@ -97,17 +97,18 @@ class Date
      * @param DateTimeZone|string $timeZone The timezone to set for all Excel datetimestamp to PHP DateTime Object conversions
      *
      * @return bool Success or failure
-     * @return bool Success or failure
      */
     public static function setDefaultTimezone($timeZone)
     {
-        if ($timeZone = self::validateTimeZone($timeZone)) {
+        try {
+            $timeZone = self::validateTimeZone($timeZone);
             self::$defaultTimeZone = $timeZone;
-
-            return true;
+            $retval = true;
+        } catch (PhpSpreadsheetException $e) {
+            $retval = false;
         }
 
-        return false;
+        return $retval;
     }
 
     /**
@@ -130,17 +131,17 @@ class Date
      * @param DateTimeZone|string $timeZone The timezone to validate, either as a timezone string or object
      *
      * @return DateTimeZone The timezone as a timezone object
-     * @return DateTimeZone The timezone as a timezone object
      */
-    protected static function validateTimeZone($timeZone)
+    private static function validateTimeZone($timeZone)
     {
-        if (is_object($timeZone) && $timeZone instanceof DateTimeZone) {
+        if ($timeZone instanceof DateTimeZone) {
             return $timeZone;
-        } elseif (is_string($timeZone)) {
+        }
+        if (in_array($timeZone, DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC))) {
             return new DateTimeZone($timeZone);
         }
 
-        throw new Exception('Invalid timezone');
+        throw new PhpSpreadsheetException('Invalid timezone');
     }
 
     /**
@@ -316,7 +317,7 @@ class Date
      */
     public static function isDateTime(Cell $pCell)
     {
-        return is_numeric($pCell->getValue()) &&
+        return is_numeric($pCell->getCalculatedValue()) &&
             self::isDateTimeFormat(
                 $pCell->getWorksheet()->getStyle(
                     $pCell->getCoordinate()
diff --git a/src/PhpSpreadsheet/Shared/TimeZone.php b/src/PhpSpreadsheet/Shared/TimeZone.php
index a87987df..43fd3653 100644
--- a/src/PhpSpreadsheet/Shared/TimeZone.php
+++ b/src/PhpSpreadsheet/Shared/TimeZone.php
@@ -23,7 +23,7 @@ class TimeZone
      */
     private static function validateTimeZone($timezone)
     {
-        return in_array($timezone, DateTimeZone::listIdentifiers());
+        return in_array($timezone, DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC));
     }
 
     /**
@@ -73,10 +73,6 @@ class TimeZone
             $timezone = self::$timezone;
         }
 
-        if ($timezone == 'UST') {
-            return 0;
-        }
-
         $objTimezone = new DateTimeZone($timezone);
         $transitions = $objTimezone->getTransitions($timestamp, $timestamp);
 
diff --git a/src/PhpSpreadsheet/Writer/Xlsx/Rels.php b/src/PhpSpreadsheet/Writer/Xlsx/Rels.php
index c2876065..a4e5769e 100644
--- a/src/PhpSpreadsheet/Writer/Xlsx/Rels.php
+++ b/src/PhpSpreadsheet/Writer/Xlsx/Rels.php
@@ -183,7 +183,6 @@ class Rels extends WriterPart
         $objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/package/2006/relationships');
 
         // Write drawing relationships?
-        $d = 0;
         $drawingOriginalIds = [];
         $unparsedLoadedData = $pWorksheet->getParent()->getUnparsedLoadedData();
         if (isset($unparsedLoadedData['sheets'][$pWorksheet->getCodeName()]['drawingOriginalIds'])) {
@@ -197,13 +196,19 @@ class Rels extends WriterPart
         }
 
         if (($pWorksheet->getDrawingCollection()->count() > 0) || (count($charts) > 0) || $drawingOriginalIds) {
-            $relPath = '../drawings/drawing' . $pWorksheetId . '.xml';
-            $rId = ++$d;
+            $rId = 1;
 
+            // Use original $relPath to get original $rId.
+            // Take first. In future can be overwritten.
+            // (! synchronize with \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Worksheet::writeDrawings)
+            reset($drawingOriginalIds);
+            $relPath = key($drawingOriginalIds);
             if (isset($drawingOriginalIds[$relPath])) {
                 $rId = (int) (substr($drawingOriginalIds[$relPath], 3));
             }
 
+            // Generate new $relPath to write drawing relationship
+            $relPath = '../drawings/drawing' . $pWorksheetId . '.xml';
             $this->writeRelationship(
                 $objWriter,
                 $rId,
diff --git a/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php b/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
index 15359a4c..3d47eeaa 100644
--- a/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
+++ b/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
@@ -1215,6 +1215,7 @@ class Worksheet extends WriterPart
         if (isset($unparsedLoadedData['sheets'][$pSheet->getCodeName()]['drawingOriginalIds'])) {
             $drawingOriginalIds = $unparsedLoadedData['sheets'][$pSheet->getCodeName()]['drawingOriginalIds'];
             // take first. In future can be overriten
+            // (! synchronize with \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Rels::writeWorksheetRelationships)
             $rId = reset($drawingOriginalIds);
         }
 
diff --git a/tests/PhpSpreadsheetTests/Calculation/DefinedNameConfusedForCellTest.php b/tests/PhpSpreadsheetTests/Calculation/DefinedNameConfusedForCellTest.php
index 12d73356..76886c23 100644
--- a/tests/PhpSpreadsheetTests/Calculation/DefinedNameConfusedForCellTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/DefinedNameConfusedForCellTest.php
@@ -18,5 +18,6 @@ class DefinedNameConfusedForCellTest extends TestCase
         $filename = tempnam(File::sysGetTempDir(), 'phpspreadsheet-test');
         $writer->save($filename);
         self::assertTrue(true);
+        unlink($filename);
     }
 }
diff --git a/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php b/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php
new file mode 100644
index 00000000..84cac747
--- /dev/null
+++ b/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Calculation\Engine;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+use PHPUnit\Framework\TestCase;
+
+class RangeTest extends TestCase
+{
+    protected $spreadSheet;
+
+    protected function setUp(): void
+    {
+        $this->spreadSheet = new Spreadsheet();
+        $this->spreadSheet->getActiveSheet()
+            ->setCellValue('A1', 1)
+            ->setCellValue('B1', 2)
+            ->setCellValue('C1', 3)
+            ->setCellValue('A2', 4)
+            ->setCellValue('B2', 5)
+            ->setCellValue('C2', 6)
+            ->setCellValue('A3', 7)
+            ->setCellValue('B3', 8)
+            ->setCellValue('C3', 9);
+    }
+
+    /**
+     * @dataProvider providerRangeEvaluation
+     *
+     * @param mixed $formula
+     * @param int $expectedResult
+     */
+    public function testRangeEvaluation($formula, $expectedResult): void
+    {
+        $workSheet = $this->spreadSheet->getActiveSheet();
+        $workSheet->setCellValue('E1', $formula);
+
+        $actualRresult = $workSheet->getCell('E1')->getCalculatedValue();
+        self::assertSame($expectedResult, $actualRresult);
+    }
+
+    public function providerRangeEvaluation()
+    {
+        return[
+            ['=SUM(A1:B3,A1:C2)', 48],
+            ['=SUM(A1:B3 A1:C2)', 12],
+            ['=SUM(A1:A3,C1:C3)', 30],
+            ['=SUM(A1:A3 C1:C3)', Functions::null()],
+            ['=SUM(A1:B2,B2:C3)', 40],
+            ['=SUM(A1:B2 B2:C3)', 5],
+        ];
+    }
+}
diff --git a/tests/PhpSpreadsheetTests/Cell/DefaultValueBinderTest.php b/tests/PhpSpreadsheetTests/Cell/DefaultValueBinderTest.php
index 90dabce3..e13cd942 100644
--- a/tests/PhpSpreadsheetTests/Cell/DefaultValueBinderTest.php
+++ b/tests/PhpSpreadsheetTests/Cell/DefaultValueBinderTest.php
@@ -57,6 +57,7 @@ class DefaultValueBinderTest extends TestCase
             ['#REF!'],
             [new DateTime()],
             [new DateTimeImmutable()],
+            ['123456\n'],
         ];
     }
 
diff --git a/tests/PhpSpreadsheetTests/Reader/CsvTest.php b/tests/PhpSpreadsheetTests/Reader/CsvTest.php
index cb2b6196..e4ccd931 100644
--- a/tests/PhpSpreadsheetTests/Reader/CsvTest.php
+++ b/tests/PhpSpreadsheetTests/Reader/CsvTest.php
@@ -200,6 +200,37 @@ EOF;
         self::assertEquals($expected, $sheet->getCell('B3')->getValue());
     }
 
+    public function testLineBreakEscape(): void
+    {
+        $reader = new Csv();
+        $spreadsheet = $reader->load('tests/data/Reader/CSV/line_break_in_enclosure_with_escaped_quotes.csv');
+        $sheet = $spreadsheet->getActiveSheet();
+        $expected = <<<EOF
+This is a "test csv file"
+with both "line breaks"
+and "escaped
+quotes" that breaks
+the delimiters
+EOF;
+        self::assertEquals($expected, $sheet->getCell('B3')->getValue());
+    }
+
+    public function testUtf32LineBreakEscape(): void
+    {
+        $reader = new Csv();
+        $reader->setInputEncoding('UTF-32LE');
+        $spreadsheet = $reader->load('tests/data/Reader/CSV/line_break_escaped_32le.csv');
+        $sheet = $spreadsheet->getActiveSheet();
+        $expected = <<<EOF
+This is a "test csv file"
+with both "line breaks"
+and "escaped
+quotes" that breaks
+the delimiters
+EOF;
+        self::assertEquals($expected, $sheet->getCell('B3')->getValue());
+    }
+
     public function testSeparatorLine(): void
     {
         $reader = new Csv();
diff --git a/tests/PhpSpreadsheetTests/Reader/Xlsx2Test.php b/tests/PhpSpreadsheetTests/Reader/Xlsx2Test.php
index 4d0b6a8a..1220c378 100644
--- a/tests/PhpSpreadsheetTests/Reader/Xlsx2Test.php
+++ b/tests/PhpSpreadsheetTests/Reader/Xlsx2Test.php
@@ -11,14 +11,6 @@ use PHPUnit\Framework\TestCase;
 
 class Xlsx2Test extends TestCase
 {
-    protected function tearDown(): void
-    {
-        $outfile = tempnam(File::sysGetTempDir(), 'phpspreadsheet-test');
-        if (file_exists($outfile)) {
-            unlink($outfile);
-        }
-    }
-
     public function testLoadXlsxConditionalFormatting2(): void
     {
         // Make sure Conditionals are read correctly from existing file
@@ -63,6 +55,7 @@ class Xlsx2Test extends TestCase
         $writer = IOFactory::createWriter($spreadshee1, 'Xlsx');
         $writer->save($outfile);
         $spreadsheet = $reader->load($outfile);
+        unlink($outfile);
         $worksheet = $spreadsheet->getActiveSheet();
 
         $conditionalStyle = $worksheet->getConditionalStyles('A2:A8');
@@ -110,6 +103,7 @@ class Xlsx2Test extends TestCase
         $writer->save($outfile);
         $reader = IOFactory::createReader('Xlsx');
         $spreadsheet = $reader->load($outfile);
+        unlink($outfile);
         $worksheet = $spreadsheet->getActiveSheet();
 
         $conditionalStyle = $worksheet->getConditionalStyles('A1:A6');
diff --git a/tests/PhpSpreadsheetTests/Reader/XlsxTest.php b/tests/PhpSpreadsheetTests/Reader/XlsxTest.php
index 9e0b5f66..b326c142 100644
--- a/tests/PhpSpreadsheetTests/Reader/XlsxTest.php
+++ b/tests/PhpSpreadsheetTests/Reader/XlsxTest.php
@@ -222,6 +222,7 @@ class XlsxTest extends TestCase
         $writer = new \PhpOffice\PhpSpreadsheet\Writer\Xlsx($excel);
         $writer->save($resultFilename);
         $excel = $reader->load($resultFilename);
+        unlink($resultFilename);
         // Fake assert. The only thing we need is to ensure the file is loaded without exception
         self::assertNotNull($excel);
     }
diff --git a/tests/PhpSpreadsheetTests/Shared/CodePageTest.php b/tests/PhpSpreadsheetTests/Shared/CodePageTest.php
index b86f9015..2bdbda72 100644
--- a/tests/PhpSpreadsheetTests/Shared/CodePageTest.php
+++ b/tests/PhpSpreadsheetTests/Shared/CodePageTest.php
@@ -24,6 +24,22 @@ class CodePageTest extends TestCase
         return require 'tests/data/Shared/CodePage.php';
     }
 
+    public function testCoverage(): void
+    {
+        $covered = [];
+        $expected = CodePage::getEncodings();
+        foreach ($expected as $key => $val) {
+            $covered[$key] = 0;
+        }
+        $tests = $this->providerCodePage();
+        foreach ($tests as $test) {
+            $covered[$test[1]] = 1;
+        }
+        foreach ($covered as $key => $val) {
+            self::assertEquals(1, $val, "Codepage $key not tested");
+        }
+    }
+
     public function testNumberToNameWithInvalidCodePage(): void
     {
         $invalidCodePage = 12345;
diff --git a/tests/PhpSpreadsheetTests/Shared/DateTest.php b/tests/PhpSpreadsheetTests/Shared/DateTest.php
index 23b31076..7254635e 100644
--- a/tests/PhpSpreadsheetTests/Shared/DateTest.php
+++ b/tests/PhpSpreadsheetTests/Shared/DateTest.php
@@ -3,10 +3,23 @@
 namespace PhpOffice\PhpSpreadsheetTests\Shared;
 
 use PhpOffice\PhpSpreadsheet\Shared\Date;
+use PhpOffice\PhpSpreadsheet\Style\NumberFormat;
 use PHPUnit\Framework\TestCase;
 
 class DateTest extends TestCase
 {
+    private $dttimezone;
+
+    protected function setUp(): void
+    {
+        $this->dttimezone = Date::getDefaultTimeZone();
+    }
+
+    protected function tearDown(): void
+    {
+        Date::setDefaultTimeZone($this->dttimezone);
+    }
+
     public function testSetExcelCalendar(): void
     {
         $calendarValues = [
@@ -168,4 +181,41 @@ class DateTest extends TestCase
     {
         return require 'tests/data/Shared/Date/ExcelToTimestamp1900Timezone.php';
     }
+
+    public function testVarious(): void
+    {
+        Date::setDefaultTimeZone('UTC');
+        self::assertFalse(Date::stringToExcel('2019-02-29'));
+        self::assertTrue((bool) Date::stringToExcel('2019-02-28'));
+        self::assertTrue((bool) Date::stringToExcel('2019-02-28 11:18'));
+        self::assertFalse(Date::stringToExcel('2019-02-28 11:71'));
+        $date = Date::PHPToExcel('2020-01-01');
+        self::assertEquals(43831.0, $date);
+        $spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
+        $sheet = $spreadsheet->getActiveSheet();
+        $sheet->setCellValue('B1', 'x');
+        $val = $sheet->getCell('B1')->getValue();
+        self::assertFalse(Date::timestampToExcel($val));
+        $cell = $sheet->getCell('A1');
+        self::assertNotNull($cell);
+        $cell->setValue($date);
+        $sheet->getStyle('A1')
+            ->getNumberFormat()
+            ->setFormatCode(NumberFormat::FORMAT_DATE_DATETIME);
+        self::assertTrue(null !== $cell && Date::isDateTime($cell));
+        $cella2 = $sheet->getCell('A2');
+        self::assertNotNull($cella2);
+        $cella2->setValue('=A1+2');
+        $sheet->getStyle('A2')
+            ->getNumberFormat()
+            ->setFormatCode(NumberFormat::FORMAT_DATE_DATETIME);
+        self::assertTrue(null !== $cella2 && Date::isDateTime($cella2));
+        $cella3 = $sheet->getCell('A3');
+        self::assertNotNull($cella3);
+        $cella3->setValue('=A1+4');
+        $sheet->getStyle('A3')
+            ->getNumberFormat()
+            ->setFormatCode('0.00E+00');
+        self::assertFalse(null !== $cella3 && Date::isDateTime($cella3));
+    }
 }
diff --git a/tests/PhpSpreadsheetTests/Shared/TimeZoneTest.php b/tests/PhpSpreadsheetTests/Shared/TimeZoneTest.php
index f6e2f5d5..ff38badf 100644
--- a/tests/PhpSpreadsheetTests/Shared/TimeZoneTest.php
+++ b/tests/PhpSpreadsheetTests/Shared/TimeZoneTest.php
@@ -2,11 +2,29 @@
 
 namespace PhpOffice\PhpSpreadsheetTests\Shared;
 
+use DateTime;
+use PhpOffice\PhpSpreadsheet\Shared\Date;
 use PhpOffice\PhpSpreadsheet\Shared\TimeZone;
 use PHPUnit\Framework\TestCase;
 
 class TimeZoneTest extends TestCase
 {
+    private $tztimezone;
+
+    private $dttimezone;
+
+    protected function setUp(): void
+    {
+        $this->tztimezone = TimeZone::getTimeZone();
+        $this->dttimezone = Date::getDefaultTimeZone();
+    }
+
+    protected function tearDown(): void
+    {
+        TimeZone::setTimeZone($this->tztimezone);
+        Date::setDefaultTimeZone($this->dttimezone);
+    }
+
     public function testSetTimezone(): void
     {
         $timezoneValues = [
@@ -20,13 +38,51 @@ class TimeZoneTest extends TestCase
         foreach ($timezoneValues as $timezoneValue) {
             $result = TimeZone::setTimezone($timezoneValue);
             self::assertTrue($result);
+            $result = Date::setDefaultTimezone($timezoneValue);
+            self::assertTrue($result);
         }
     }
 
+    public function testSetTimezoneBackwardCompatible(): void
+    {
+        $bcTimezone = 'Etc/GMT+10';
+        $result = TimeZone::setTimezone($bcTimezone);
+        self::assertTrue($result);
+        $result = Date::setDefaultTimezone($bcTimezone);
+        self::assertTrue($result);
+    }
+
     public function testSetTimezoneWithInvalidValue(): void
     {
-        $unsupportedTimezone = 'Etc/GMT+10';
+        $unsupportedTimezone = 'XEtc/GMT+10';
         $result = TimeZone::setTimezone($unsupportedTimezone);
         self::assertFalse($result);
+        $result = Date::setDefaultTimezone($unsupportedTimezone);
+        self::assertFalse($result);
+    }
+
+    public function testTimeZoneAdjustmentsInvalidTz(): void
+    {
+        $this->expectException(\PhpOffice\PhpSpreadsheet\Exception::class);
+        $dtobj = DateTime::createFromFormat('Y-m-d H:i:s', '2008-09-22 00:00:00');
+        $tstmp = $dtobj->getTimestamp();
+        $unsupportedTimeZone = 'XEtc/GMT+10';
+        TimeZone::getTimeZoneAdjustment($unsupportedTimeZone, $tstmp);
+    }
+
+    public function testTimeZoneAdjustments(): void
+    {
+        $dtobj = DateTime::createFromFormat('Y-m-d H:i:s', '2008-01-01 00:00:00');
+        $tstmp = $dtobj->getTimestamp();
+        $supportedTimeZone = 'UTC';
+        $adj = TimeZone::getTimeZoneAdjustment($supportedTimeZone, $tstmp);
+        self::assertEquals(0, $adj);
+        $supportedTimeZone = 'America/Toronto';
+        $adj = TimeZone::getTimeZoneAdjustment($supportedTimeZone, $tstmp);
+        self::assertEquals(-18000, $adj);
+        $supportedTimeZone = 'America/Chicago';
+        TimeZone::setTimeZone($supportedTimeZone);
+        $adj = TimeZone::getTimeZoneAdjustment(null, $tstmp);
+        self::assertEquals(-21600, $adj);
     }
 }
diff --git a/tests/PhpSpreadsheetTests/Writer/Html/ImagesRootTest.php b/tests/PhpSpreadsheetTests/Writer/Html/ImagesRootTest.php
index 5c887d53..6cc7f18f 100644
--- a/tests/PhpSpreadsheetTests/Writer/Html/ImagesRootTest.php
+++ b/tests/PhpSpreadsheetTests/Writer/Html/ImagesRootTest.php
@@ -9,6 +9,18 @@ use PhpOffice\PhpSpreadsheetTests\Functional;
 
 class ImagesRootTest extends Functional\AbstractFunctional
 {
+    private $curdir;
+
+    protected function setUp(): void
+    {
+        $this->curdir = getcwd();
+    }
+
+    protected function tearDown(): void
+    {
+        chdir($this->curdir);
+    }
+
     public function testImagesRoot(): void
     {
         $spreadsheet = new Spreadsheet();
@@ -20,7 +32,6 @@ class ImagesRootTest extends Functional\AbstractFunctional
         $newdir = __DIR__ . '/../../../data/Reader/HTML';
         $stub = 'image.jpg';
         $imagePath = "./$stub";
-        $curdir = getcwd();
         chdir($newdir);
         self::assertFileExists($imagePath);
         $drawing->setPath($imagePath);
@@ -34,7 +45,6 @@ class ImagesRootTest extends Functional\AbstractFunctional
         $writer = new Html($spreadsheet);
         $writer->setImagesRoot($root);
         $html = $writer->generateHTMLAll();
-        chdir($curdir);
         $dom = new DOMDocument();
         $dom->loadHTML($html);
         $body = $dom->getElementsByTagName('body')[0];
diff --git a/tests/PhpSpreadsheetTests/Writer/Html/InvalidFileNameTest.php b/tests/PhpSpreadsheetTests/Writer/Html/InvalidFileNameTest.php
index 7baa2338..36a40e96 100644
--- a/tests/PhpSpreadsheetTests/Writer/Html/InvalidFileNameTest.php
+++ b/tests/PhpSpreadsheetTests/Writer/Html/InvalidFileNameTest.php
@@ -30,9 +30,8 @@ class InvalidFileNameTest extends Functional\AbstractFunctional
         $writer->save('');
     }
 
-    public function testEmptyTempdirNamePdf(): void
+    public function testNotEmptyTempdirNamePdf(): void
     {
-        $this->expectException(WriterException::class);
         $spreadsheet = new Spreadsheet();
         $spreadsheet->getActiveSheet()->getCell('A1')->setValue('Cell 1');
         $writer = new Mpdf($spreadsheet);
@@ -41,6 +40,16 @@ class InvalidFileNameTest extends Functional\AbstractFunctional
         $writer->setPaperSize(PageSetup::PAPERSIZE_LEDGER);
         self::assertEquals($writer->getPaperSize(), PageSetup::PAPERSIZE_LEDGER);
         self::assertEquals(File::sysGetTempDir() . '/phpsppdf', $writer->getTempDir());
+        $writer->setTempDir(File::sysGetTempDir());
+        self::assertEquals(File::sysGetTempDir(), $writer->getTempDir());
+    }
+
+    public function testEmptyTempdirNamePdf(): void
+    {
+        $this->expectException(WriterException::class);
+        $spreadsheet = new Spreadsheet();
+        $spreadsheet->getActiveSheet()->getCell('A1')->setValue('Cell 1');
+        $writer = new Mpdf($spreadsheet);
         $writer->setTempDir('');
     }
 
diff --git a/tests/PhpSpreadsheetTests/Writer/Xls/FormulaErrTest.php b/tests/PhpSpreadsheetTests/Writer/Xls/FormulaErrTest.php
index 61c70cb6..21a7c928 100644
--- a/tests/PhpSpreadsheetTests/Writer/Xls/FormulaErrTest.php
+++ b/tests/PhpSpreadsheetTests/Writer/Xls/FormulaErrTest.php
@@ -9,14 +9,6 @@ use PHPUnit\Framework\TestCase;
 
 class FormulaErrTest extends TestCase
 {
-    protected function tearDown(): void
-    {
-        $filename = tempnam(File::sysGetTempDir(), 'phpspreadsheet-test');
-        if (file_exists($filename)) {
-            unlink($filename);
-        }
-    }
-
     public function testFormulaError(): void
     {
         $obj = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
@@ -31,6 +23,7 @@ class FormulaErrTest extends TestCase
         $writer->save($filename);
         $reader = IOFactory::createReader('Xls');
         $robj = $reader->load($filename);
+        unlink($filename);
         $sheet0 = $robj->setActiveSheetIndex(0);
         $a1 = $sheet0->getCell('A1')->getCalculatedValue();
         self::assertEquals(2, $a1);
diff --git a/tests/PhpSpreadsheetTests/Writer/Xlsx/DrawingsTest.php b/tests/PhpSpreadsheetTests/Writer/Xlsx/DrawingsTest.php
new file mode 100644
index 00000000..d6ad77c6
--- /dev/null
+++ b/tests/PhpSpreadsheetTests/Writer/Xlsx/DrawingsTest.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Writer\Xlsx;
+
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
+use PhpOffice\PhpSpreadsheet\Settings;
+use PhpOffice\PhpSpreadsheetTests\Functional\AbstractFunctional;
+
+class DrawingsTest extends AbstractFunctional
+{
+    /**
+     * @var int
+     */
+    protected $prevValue;
+
+    protected function setUp(): void
+    {
+        $this->prevValue = Settings::getLibXmlLoaderOptions();
+
+        // Disable validating XML with the DTD
+        Settings::setLibXmlLoaderOptions($this->prevValue & ~LIBXML_DTDVALID & ~LIBXML_DTDATTR & ~LIBXML_DTDLOAD);
+    }
+
+    protected function tearDown(): void
+    {
+        Settings::setLibXmlLoaderOptions($this->prevValue);
+    }
+
+    /**
+     * Test save and load XLSX file with drawing on 2nd worksheet.
+     */
+    public function testSaveLoadWithDrawingOn2ndWorksheet(): void
+    {
+        // Read spreadsheet from file
+        $inputFilename = 'tests/data/Writer/XLSX/drawing_on_2nd_page.xlsx';
+        $reader = new Xlsx();
+        $spreadsheet = $reader->load($inputFilename);
+
+        // Save spreadsheet to file and read it back
+        $reloadedSpreadsheet = $this->writeAndReload($spreadsheet, 'Xlsx');
+
+        // Fake assert. The only thing we need is to ensure the file is loaded without exception
+        self::assertNotNull($reloadedSpreadsheet);
+    }
+}
diff --git a/tests/PhpSpreadsheetTests/Writer/Xlsx/FloatsRetainedTest.php b/tests/PhpSpreadsheetTests/Writer/Xlsx/FloatsRetainedTest.php
index aad074de..746b9846 100644
--- a/tests/PhpSpreadsheetTests/Writer/Xlsx/FloatsRetainedTest.php
+++ b/tests/PhpSpreadsheetTests/Writer/Xlsx/FloatsRetainedTest.php
@@ -28,6 +28,7 @@ class FloatsRetainedTest extends TestCase
 
         $reader = new Reader();
         $sheet = $reader->load($outputFilename);
+        unlink($outputFilename);
 
         self::assertSame($value, $sheet->getActiveSheet()->getCell('A1')->getValue());
     }
diff --git a/tests/data/Cell/DefaultValueBinder.php b/tests/data/Cell/DefaultValueBinder.php
index 53ba6281..1f0c40e0 100644
--- a/tests/data/Cell/DefaultValueBinder.php
+++ b/tests/data/Cell/DefaultValueBinder.php
@@ -73,4 +73,8 @@ return [
         'e',
         '#DIV/0!',
     ],
+    [
+        's',
+        '123456\n',
+    ],
 ];
diff --git a/tests/data/Reader/CSV/line_break_escaped_32le.csv b/tests/data/Reader/CSV/line_break_escaped_32le.csv
new file mode 100644
index 00000000..8e0f0243
Binary files /dev/null and b/tests/data/Reader/CSV/line_break_escaped_32le.csv differ
diff --git a/tests/data/Reader/CSV/line_break_in_enclosure_with_escaped_quotes.csv b/tests/data/Reader/CSV/line_break_in_enclosure_with_escaped_quotes.csv
index e84db1b5..01ce36a6 100644
--- a/tests/data/Reader/CSV/line_break_in_enclosure_with_escaped_quotes.csv
+++ b/tests/data/Reader/CSV/line_break_in_enclosure_with_escaped_quotes.csv
@@ -1,21 +1,21 @@
 Name,Copy,URL
-Test,"This is a \"test csv file\"
-with both \"line breaks\"
-and \"escaped
-quotes\" that breaks
+Test,"This is a ""test csv file""
+with both ""line breaks""
+and ""escaped
+quotes"" that breaks
 the delimiters",http://google.com
-Test,"This is a \"test csv file\"
-with both \"line breaks\"
-and \"escaped
-quotes\" that breaks
+Test,"This is a ""test csv file""
+with both ""line breaks""
+and ""escaped
+quotes"" that breaks
 the delimiters",http://google.com
-Test,"This is a \"test csv file\"
-with both \"line breaks\"
-and \"escaped
-quotes\" that breaks
+Test,"This is a ""test csv file""
+with both ""line breaks""
+and ""escaped
+quotes"" that breaks
 the delimiters",http://google.com
-Test,"This is a \"test csv file\"
-with both \"line breaks\"
-and \"escaped
-quotes\" that breaks
+Test,"This is a ""test csv file""
+with both ""line breaks""
+and ""escaped
+quotes"" that breaks
 the delimiters",http://google.com
diff --git a/tests/data/Shared/CodePage.php b/tests/data/Shared/CodePage.php
index 1cf09d88..82bb23e4 100644
--- a/tests/data/Shared/CodePage.php
+++ b/tests/data/Shared/CodePage.php
@@ -1,6 +1,11 @@
 <?php
 
 return [
+    // ANSI Latin I (BIFF4-BIFF7)
+    [
+        'CP1252',
+        0,
+    ],
     // ASCII
     [
         'ASCII',
@@ -127,11 +132,6 @@ return [
         1251,
     ],
     // ANSI Latin I (BIFF4-BIFF7)
-    [
-        'CP1252',
-        0,
-    ],
-    // ANSI Latin I (BIFF4-BIFF7)
     [
         'CP1252',
         1252,
@@ -176,6 +176,31 @@ return [
         'MAC',
         10000,
     ],
+    // Macintosh Japanese
+    [
+        'CP932',
+        10001,
+    ],
+    // Macintosh Chinese Traditional
+    [
+        'CP950',
+        10002,
+    ],
+    // Macintosh Korean
+    [
+        'CP1361',
+        10003,
+    ],
+    // Apple Arabic
+    [
+        'MACARABIC',
+        10004,
+    ],
+    // Apple Hebrew
+    [
+        'MACHEBREW',
+        10005,
+    ],
     // Macintosh Greek
     [
         'MACGREEK',
@@ -186,6 +211,26 @@ return [
         'MACCYRILLIC',
         10007,
     ],
+    // Macintosh - Simplified Chinese (GB 2312)
+    [
+        'CP936',
+        10008,
+    ],
+    // Macintosh Romania
+    [
+        'MACROMANIA',
+        10010,
+    ],
+    // Macintosh Ukraine
+    [
+        'MACUKRAINE',
+        10017,
+    ],
+    // Macintosh Thai
+    [
+        'MACTHAI',
+        10021,
+    ],
     // Macintosh Central Europe
     [
         'MACCENTRALEUROPE',
@@ -201,6 +246,16 @@ return [
         'MACTURKISH',
         10081,
     ],
+    // Macintosh Croatian
+    [
+        'MACCROATIAN',
+        10082,
+    ],
+    // UTF-16 (BIFF8) grandfathers erroneous libraries
+    [
+        'UTF-16LE',
+        21010,
+    ],
     // Apple Roman
     [
         'MAC',
diff --git a/tests/data/Shared/Date/FormatCodes.php b/tests/data/Shared/Date/FormatCodes.php
index 7245000a..64810de3 100644
--- a/tests/data/Shared/Date/FormatCodes.php
+++ b/tests/data/Shared/Date/FormatCodes.php
@@ -146,4 +146,8 @@ return [
         false,
         '#,##0.00 "dollars"',
     ],
+    [
+        true,
+        '"date " y-m-d',
+    ],
 ];
diff --git a/tests/data/Writer/XLSX/drawing_on_2nd_page.xlsx b/tests/data/Writer/XLSX/drawing_on_2nd_page.xlsx
new file mode 100644
index 00000000..fa51215a
Binary files /dev/null and b/tests/data/Writer/XLSX/drawing_on_2nd_page.xlsx differ