PhpUnit 5.6 and 5.7 released

Author: SergeyZ

.travis.yml

@@ -19,8 +19,7 @@ env:
   - PHPUNIT=5.4.*     # EOL February 2, 2018
   - PHPUNIT=5.5.*     # EOL February 2, 2018
   - PHPUNIT=5.6.*     # EOL February 2, 2018
-  - PHPUNIT=5.6.x-dev # EOL February 2, 2018
-  - PHPUNIT=5.7.x-dev # EOL February 2, 2018
+  - PHPUNIT=5.7.*     # EOL February 2, 2018
   - PHPUNIT=6.0.x-dev # EOL February 2, 2018
 
 matrix: