implement required=False on ChooserBlocks
implement required=False on ChooserBlocks

zerolab/wagtail,KimGlazebrook/wagtail-experiment,nrsimha/wagtail,stevenewey/wagtail,thenewguy/wagtail,mikedingjan/wagtail,rsalmaso/wagtail,nutztherookie/wagtail,hanpama/wagtail,m-sanders/wagtail,kurtw/wagtail,gasman/wagtail,Klaudit/wagtail,quru/wagtail,rsalmaso/wagtail,hamsterbacke23/wagtail,nealtodd/wagtail,thenewguy/wagtail,mayapurmedia/wagtail,gasman/wagtail,quru/wagtail,gasman/wagtail,tangentlabs/wagtail,nimasmi/wagtail,stevenewey/wagtail,chrxr/wagtail,takeflight/wagtail,mayapurmedia/wagtail,kaedroho/wagtail,mjec/wagtail,Pennebaker/wagtail,WQuanfeng/wagtail,jnns/wagtail,rsalmaso/wagtail,nilnvoid/wagtail,Klaudit/wagtail,davecranwell/wagtail,iho/wagtail,wagtail/wagtail,hamsterbacke23/wagtail,nilnvoid/wagtail,FlipperPA/wagtail,FlipperPA/wagtail,darith27/wagtail,FlipperPA/wagtail,gogobook/wagtail,iho/wagtail,Tivix/wagtail,janusnic/wagtail,gogobook/wagtail,bjesus/wagtail,wagtail/wagtail,timorieber/wagtail,Toshakins/wagtail,nrsimha/wagtail,timorieber/wagtail,mikedingjan/wagtail,stevenewey/wagtail,nrsimha/wagtail,thenewguy/wagtail,inonit/wagtail,quru/wagtail,davecranwell/wagtail,dresiu/wagtail,JoshBarr/wagtail,inonit/wagtail,serzans/wagtail,rjsproxy/wagtail,JoshBarr/wagtail,chrxr/wagtail,mayapurmedia/wagtail,dresiu/wagtail,timorieber/wagtail,zerolab/wagtail,Tivix/wagtail,serzans/wagtail,JoshBarr/wagtail,nimasmi/wagtail,jnns/wagtail,taedori81/wagtail,hanpama/wagtail,mixxorz/wagtail,janusnic/wagtail,timorieber/wagtail,tangentlabs/wagtail,kurtrwall/wagtail,Tivix/wagtail,jorge-marques/wagtail,wagtail/wagtail,kurtrwall/wagtail,thenewguy/wagtail,serzans/wagtail,KimGlazebrook/wagtail-experiment,m-sanders/wagtail,iho/wagtail,KimGlazebrook/wagtail-experiment,mjec/wagtail,takeshineshiro/wagtail,marctc/wagtail,taedori81/wagtail,dresiu/wagtail,kaedroho/wagtail,marctc/wagtail,jorge-marques/wagtail,takeshineshiro/wagtail,inonit/wagtail,wagtail/wagtail,gogobook/wagtail,mixxorz/wagtail,hanpama/wagtail,bjesus/wagtail,rv816/wagtail,takeflight/wagtail,zerolab/wagtail,mikedingjan/wagtail,takeflight/wagtail,WQuanfeng/wagtail,iansprice/wagtail,mikedingjan/wagtail,torchbox/wagtail,nimasmi/wagtail,Klaudit/wagtail,nutztherookie/wagtail,WQuanfeng/wagtail,jorge-marques/wagtail,janusnic/wagtail,rsalmaso/wagtail,mephizzle/wagtail,iansprice/wagtail,rjsproxy/wagtail,Toshakins/wagtail,dresiu/wagtail,stevenewey/wagtail,rv816/wagtail,kurtrwall/wagtail,mayapurmedia/wagtail,gasman/wagtail,Pennebaker/wagtail,jordij/wagtail,rsalmaso/wagtail,nutztherookie/wagtail,kaedroho/wagtail,jnns/wagtail,janusnic/wagtail,darith27/wagtail,jorge-marques/wagtail,mixxorz/wagtail,rjsproxy/wagtail,bjesus/wagtail,rv816/wagtail,chrxr/wagtail,nealtodd/wagtail,nealtodd/wagtail,hanpama/wagtail,kurtrwall/wagtail,tangentlabs/wagtail,zerolab/wagtail,taedori81/wagtail,nrsimha/wagtail,hamsterbacke23/wagtail,Toshakins/wagtail,gogobook/wagtail,kurtw/wagtail,mjec/wagtail,tangentlabs/wagtail,mephizzle/wagtail,chrxr/wagtail,Pennebaker/wagtail,KimGlazebrook/wagtail-experiment,nutztherookie/wagtail,thenewguy/wagtail,nealtodd/wagtail,nilnvoid/wagtail,bjesus/wagtail,kurtw/wagtail,takeflight/wagtail,torchbox/wagtail,m-sanders/wagtail,mixxorz/wagtail,gasman/wagtail,quru/wagtail,torchbox/wagtail,taedori81/wagtail,Pennebaker/wagtail,Toshakins/wagtail,wagtail/wagtail,davecranwell/wagtail,iansprice/wagtail,jordij/wagtail,Klaudit/wagtail,inonit/wagtail,davecranwell/wagtail,iho/wagtail,kaedroho/wagtail,kaedroho/wagtail,serzans/wagtail,darith27/wagtail,takeshineshiro/wagtail,jordij/wagtail,FlipperPA/wagtail,mephizzle/wagtail,jorge-marques/wagtail,nilnvoid/wagtail,zerolab/wagtail,mixxorz/wagtail,takeshineshiro/wagtail,mephizzle/wagtail,nimasmi/wagtail,m-sanders/wagtail,rv816/wagtail,marctc/wagtail,jnns/wagtail,rjsproxy/wagtail,dresiu/wagtail,WQuanfeng/wagtail,hamsterbacke23/wagtail,mjec/wagtail,kurtw/wagtail,taedori81/wagtail,marctc/wagtail,Tivix/wagtail,jordij/wagtail,JoshBarr/wagtail,iansprice/wagtail,darith27/wagtail,torchbox/wagtail