Update composer.json
Update composer.json

Update twig requirement to 1.15 to support round filter used in https://github.com/sonata-project/SonataAdminBundle/blob/453c87199286d30f4918a06a2665ecbc7ed1e2b6/Resources/views/Core/add_block.html.twig#L3
idchlife/SonataAdminBundle,ruscon/SonataAdminBundle,dankempster/SonataAdminBundle,ryanhughes/SonataAdminBundle,jakublech/SonataAdminBundle,Th3Mouk/SonataAdminBundle,andythorne/SonataAdminBundle,j-ledoux/SonataAdminBundle,j-ledoux/SonataAdminBundle,Th3Mouk/SonataAdminBundle,osavchenko/SonataAdminBundle,ruscon/SonataAdminBundle,ellementA/SonataAdminBundle,binhle410/SonataAdminBundle,morfin60/SonataAdminBundle,core23/SonataAdminBundle,osavchenko/SonataAdminBundle,jlamur/SonataAdminBundle,Storke/SonataAdminBundle,joshlopes/SonataAdminBundle,dankempster/SonataAdminBundle,lutangar/SonataAdminBundle,ju1ius/SonataAdminBundle,fosvn/SonataAdminBundle,morfin60/SonataAdminBundle,morgangiraud/SonataAdminBundle,ellementA/SonataAdminBundle,nexylan/SonataAdminBundle,nexylan/SonataAdminBundle,digitalkaoz/SonataAdminBundle,OskarStark/SonataAdminBundle,Romashka/SonataAdminBundle,mikemeier/SonataAdminBundle,rswork/SonataAdminBundle,qsomazzi/SonataAdminBundle,mikemeier/SonataAdminBundle,idchlife/SonataAdminBundle,digitalkaoz/SonataAdminBundle,jakublech/SonataAdminBundle,Koc/SonataAdminBundle,rmzamora/SonataAdminBundle,greg0ire/SonataAdminBundle,cmacetko/SonataAdminBundle,robhunt3r/SonataAdminBundle,OskarStark/SonataAdminBundle,idchlife/SonataAdminBundle,rschumacher/SonataAdminBundle,Armstrong1992/SonataAdminBundle,mweimerskirch/SonataAdminBundle,core23/SonataAdminBundle,lightglitch/SonataAdminBundle,tim96/SonataAdminBundle,andythorne/SonataAdminBundle,fosvn/SonataAdminBundle,Denniskevin/SonataAdminBundle,morgangiraud/SonataAdminBundle,claudusd/SonataAdminBundle,news-life-media/SonataAdminBundle,tskorupka/SonataAdminBundle,edouardkombo/SonataAdminBundle,jlamur/SonataAdminBundle,ellementA/SonataAdminBundle,dmarkowicz/SonataAdminBundle,mikemeier/SonataAdminBundle,Romashka/SonataAdminBundle,ju1ius/SonataAdminBundle,vincenttouzet/SonataAdminBundle,mohebifar/SonataAdminBundle,gnorby88/SonataAdminBundle,ellementA/SonataAdminBundle,Koc/SonataAdminBundle,peter-gribanov/SonataAdminBundle,cmacetko/SonataAdminBundle,ARTACK/SonataAdminBundle,jordisala1991/SonataAdminBundle,mohebifar/SonataAdminBundle,claudusd/SonataAdminBundle,jakublech/SonataAdminBundle,0mars/SonataAdminBundle,rswork/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,morfin60/SonataAdminBundle,gnorby88/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,news-life-media/SonataAdminBundle,rswork/SonataAdminBundle,Koc/SonataAdminBundle,claudusd/SonataAdminBundle,edouardkombo/SonataAdminBundle,binhle410/SonataAdminBundle,ejkun/SonataAdminBundle,Romashka/SonataAdminBundle,ARTACK/SonataAdminBundle,amine2z/SonataAdminBundle,ryanhughes/SonataAdminBundle,ossinkine/SonataAdminBundle,binhle410/SonataAdminBundle,vincenttouzet/SonataAdminBundle,tim96/SonataAdminBundle,jordisala1991/SonataAdminBundle,robhunt3r/SonataAdminBundle,jlamur/SonataAdminBundle,ellementA/SonataAdminBundle,jszmidt/SonataAdminBundle,fosvn/SonataAdminBundle,peter-gribanov/SonataAdminBundle,tunne/SonataAdminBundle,claudusd/SonataAdminBundle,ksom/SonataAdminBundle,joshlopes/SonataAdminBundle,gRoussac/SonataAdminBundle,arbislimen/SonataAdminBundle,ossinkine/SonataAdminBundle,mweimerskirch/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,ejkun/SonataAdminBundle,dmarkowicz/SonataAdminBundle,tunne/SonataAdminBundle,news-life-media/SonataAdminBundle,vincenttouzet/SonataAdminBundle,Th3Mouk/SonataAdminBundle,sonata-project/SonataAdminBundle,core23/SonataAdminBundle,ARTACK/SonataAdminBundle,tskorupka/SonataAdminBundle,Denniskevin/SonataAdminBundle,0mars/SonataAdminBundle,qsomazzi/SonataAdminBundle,rschumacher/SonataAdminBundle,goldbroker/SonataAdminBundle,morgangiraud/SonataAdminBundle,ju1ius/SonataAdminBundle,tunne/SonataAdminBundle,tunne/SonataAdminBundle,robhunt3r/SonataAdminBundle,FabienD/SonataAdminBundle,morgangiraud/SonataAdminBundle,rschumacher/SonataAdminBundle,FabienD/SonataAdminBundle,rswork/SonataAdminBundle,osavchenko/SonataAdminBundle,mgdigital/SonataAdminBundle,goldbroker/SonataAdminBundle,rmzamora/SonataAdminBundle,Storke/SonataAdminBundle,lightglitch/SonataAdminBundle,gnorby88/SonataAdminBundle,jszmidt/SonataAdminBundle,binhle410/SonataAdminBundle,amine2z/SonataAdminBundle,goldbroker/SonataAdminBundle,morfin60/SonataAdminBundle,ruscon/SonataAdminBundle,mweimerskirch/SonataAdminBundle,ossinkine/SonataAdminBundle,jakublech/SonataAdminBundle,ksom/SonataAdminBundle,j-ledoux/SonataAdminBundle,mgdigital/SonataAdminBundle,jlamur/SonataAdminBundle,arbislimen/SonataAdminBundle,OskarStark/SonataAdminBundle,Romashka/SonataAdminBundle,j-ledoux/SonataAdminBundle,ejkun/SonataAdminBundle,cmacetko/SonataAdminBundle,mikemeier/SonataAdminBundle,digitalkaoz/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,0mars/SonataAdminBundle,qsomazzi/SonataAdminBundle,jszmidt/SonataAdminBundle,Denniskevin/SonataAdminBundle,jszmidt/SonataAdminBundle,ryanhughes/SonataAdminBundle,Armstrong1992/SonataAdminBundle,mgdigital/SonataAdminBundle,Storke/SonataAdminBundle,Denniskevin/SonataAdminBundle,dmarkowicz/SonataAdminBundle,news-life-media/SonataAdminBundle,ejkun/SonataAdminBundle,core23/SonataAdminBundle,ksom/SonataAdminBundle,gRoussac/SonataAdminBundle,OskarStark/SonataAdminBundle,ju1ius/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,mweimerskirch/SonataAdminBundle,vincenttouzet/SonataAdminBundle,ejkun/SonataAdminBundle,cmacetko/SonataAdminBundle,andythorne/SonataAdminBundle,lutangar/SonataAdminBundle,lightglitch/SonataAdminBundle,peter-gribanov/SonataAdminBundle,rmzamora/SonataAdminBundle,arbislimen/SonataAdminBundle,greg0ire/SonataAdminBundle,peter-gribanov/SonataAdminBundle,tim96/SonataAdminBundle,rmzamora/SonataAdminBundle,mohebifar/SonataAdminBundle,gRoussac/SonataAdminBundle,tskorupka/SonataAdminBundle,edouardkombo/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,idchlife/SonataAdminBundle,edouardkombo/SonataAdminBundle,lutangar/SonataAdminBundle,tskorupka/SonataAdminBundle,gRoussac/SonataAdminBundle,goldbroker/SonataAdminBundle,ARTACK/SonataAdminBundle,ruscon/SonataAdminBundle,Koc/SonataAdminBundle,dankempster/SonataAdminBundle,osavchenko/SonataAdminBundle,0mars/SonataAdminBundle,greg0ire/SonataAdminBundle,osavchenko/SonataAdminBundle,ryanhughes/SonataAdminBundle,joshlopes/SonataAdminBundle,FabienD/SonataAdminBundle,nexylan/SonataAdminBundle,fosvn/SonataAdminBundle,Th3Mouk/SonataAdminBundle,robhunt3r/SonataAdminBundle,amine2z/SonataAdminBundle,jordisala1991/SonataAdminBundle,gnorby88/SonataAdminBundle,arbislimen/SonataAdminBundle,news-life-media/SonataAdminBundle,lightglitch/SonataAdminBundle,Romashka/SonataAdminBundle,dmarkowicz/SonataAdminBundle,mgdigital/SonataAdminBundle,ksom/SonataAdminBundle,ossinkine/SonataAdminBundle,mohebifar/SonataAdminBundle,joshlopes/SonataAdminBundle,FabienD/SonataAdminBundle,amine2z/SonataAdminBundle,sonata-project/SonataAdminBundle,dmarkowicz/SonataAdminBundle,jordisala1991/SonataAdminBundle,nexylan/SonataAdminBundle,rschumacher/SonataAdminBundle,jlamur/SonataAdminBundle,digitalkaoz/SonataAdminBundle,morfin60/SonataAdminBundle,binhle410/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,dankempster/SonataAdminBundle,qsomazzi/SonataAdminBundle,lutangar/SonataAdminBundle,Storke/SonataAdminBundle,greg0ire/SonataAdminBundle,j-ledoux/SonataAdminBundle,andythorne/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,tim96/SonataAdminBundle