Add note to changelog, improve symfony_bridges changelog entry
Add note to changelog, improve symfony_bridges changelog entry

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