csfix

hotfix

hotfix

fix symfony versions

hotfix

hotfix

new implementation of FileValidator

new implementation of ImageValidator

added asserts for file content

changed $this on $that

hotfix travis

hotfix

hotfix

hotfix
Restored older version of PHPUnit.
Merge branch 'dev-composer-travis-update' of github.com:partikus/doctrine-extensions-bundle into dev-composer-travis-update