updated phpunit

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) 
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [2.0.0] - UNRELEASED
+## [2.0.0] - 2018-08-01
 
 ### Added
 
@@ -193,7 +193,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Stream factory
 
 
-[2.0.0]: https://github.com/middlewares/utils/compare/v1.2.0...HEAD
+[2.0.0]: https://github.com/middlewares/utils/compare/v1.2.0...v2.0.0
 [1.2.0]: https://github.com/middlewares/utils/compare/v1.1.0...v1.2.0
 [1.1.0]: https://github.com/middlewares/utils/compare/v1.0.0...v1.1.0
 [1.0.0]: https://github.com/middlewares/utils/compare/v0.14.0...v1.0.0

composer.json

@@ -22,7 +22,7 @@
         "psr/http-factory": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.0",
+        "phpunit/phpunit": "^6.0|^7.0",
         "zendframework/zend-diactoros": "^1.3",
         "friendsofphp/php-cs-fixer": "^2.0",
         "squizlabs/php_codesniffer": "^3.0",