Composer: in development, we require 5.3.3 for testing
Composer: in development, we require 5.3.3 for testing

stefen/whoops,UnderDogg/whoops,Vmak11/whoops,staabm/whoops,oligriffiths/whoops,michabbb-backup/whoops,emilkje/whoops,michabbb-backup/whoops,nonconforme/whoops,filp/whoops,emilkje/whoops,oligriffiths/whoops,filp/whoops,UnderDogg/whoops,nonconforme/whoops,staabm/whoops,stefen/whoops,Vmak11/whoops