Switched to any stable Symfony 2.x version.
Switched to any stable version of behat (at least 2.4).
Any monolog version should be fine.
Merge branch 'composer-fix' of github.com:jakzal/MonologExtension into develop
Revert "Merge branch 'composer-fix' of github.com:jakzal/MonologExtension into develop"

This reverts commit 05e3ac8ac8c4cf3425dd05914227ba6bdb38be42, reversing
changes made to 0caf3039fc47a1000728406ff6ecf5f5a8a897de.
Deps version bump