Minimum PHP 7.0 and updated travis

.travis.yml

@@ -2,12 +2,16 @@ language: php
 dist: trusty
 
 php:
-  - 5.6
   - 7.0
   - 7.1
   - 7.2
   - 7.3
 
+matrix:
+  fast_finish: true
+  allow_failures:
+    - php: 5.6
+
 cache:
   directories:
     - cache

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 
 ## [Unreleased]
 
+- **Minimum version of PHP for the next release is now 7.0.0**
+
 ### Added
 
 - Added support for the SWITCH function - [Issue #963](https://github.com/PHPOffice/PhpSpreadsheet/issues/963) and [PR #983](https://github.com/PHPOffice/PhpSpreadsheet/pull/983)
@@ -16,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 
 - Whitelist `tsv` extension when opening CSV files [#429](https://github.com/PHPOffice/PhpSpreadsheet/issues/429)
 - Fix a SUMIF warning with some versions of PHP when having different length of arrays provided as input [#873](https://github.com/PHPOffice/PhpSpreadsheet/pull/873)
+- Fix incorrectly handled backslash-escaped space characters in number format
 
 ## [1.7.0] - 2019-05-26
 
@@ -27,7 +30,6 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 
 - Fix handling for escaped enclosures and new lines in CSV Separator Inference
 - Fix MATCH an error was appearing when comparing strings against 0 (always true)
-- Fix incorrectly handled backslash-escaped space characters in number format
 - Fix wrong calculation of highest column with specified row [#700](https://github.com/PHPOffice/PhpSpreadsheet/issues/700)
 - Fix VLOOKUP 
 - Fix return type hint

composer.json

@@ -39,7 +39,7 @@
         ]
     },
     "require": {
-        "php": "^5.6|^7.0",
+        "php": "^7.0",
         "ext-ctype": "*",
         "ext-dom": "*",
         "ext-gd": "*",