merged branch igorw/fat-constraints (PR #615)
merged branch igorw/fat-constraints (PR #615)

This PR was merged into the master branch.

Commits
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7c1f6a5 Improve constraints of fat composer.json

Discussion
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Improve constraints of fat composer.json

* Change symfony/* from 2.1.* => ~2.1
* Delegate twig and monolog version selection to bridges

fabpot/Silex,fabpot/Silex,lokhman/Silex,romainneutron/Silex,naderman/Silex,CarsonF/Silex,jdreesen/Silex,cgsmith/Silex,SanderKnape/Silex,peterkokot/Silex,cesarmarinhorj/Silex,Tobion/Silex,naderman/Silex,RayRutjes/Silex,mmauri04/Silex,Xephi/Silex,Incognito/silex-fork,Tobion/Silex,jdreesen/Silex,fhinkel/Silex,Incognito/silex-fork,SpacePossum/Silex,lokhman/Silex,arduanov/Silex,JPry/Silex,mmauri04/Silex,beealone/Silex,akucherevskiy/developex_test,mathroc/Silex,mTorres/Silex,cgsmith/Silex,mathroc/Silex,peterkokot/Silex,GromNaN/Silex,tcx1000/Silex,SpacePossum/Silex,SanderKnape/Silex,fhinkel/Silex,plotek/Silex,arduanov/Silex,CarsonF/Silex,JPry/Silex,cesarmarinhorj/Silex,GromNaN/Silex,tcx1000/Silex,silexphp/Silex,Tobion/Silex,plotek/Silex,naderman/Silex,akucherevskiy/developex_test,gencer/Silex,romainneutron/Silex,romainneutron/Silex,Xephi/Silex,CarsonF/Silex,RayRutjes/Silex,peterkokot/Silex,akucherevskiy/developex_test,mTorres/Silex,GromNaN/Silex,beealone/Silex