assert that event callbacks are actually callable
assert that event callbacks are actually callable

jffernandez/kivy,gonzafirewall/kivy,vitorio/kivy,CuriousLearner/kivy,xiaoyanit/kivy,bob-the-hamster/kivy,habibmasuro/kivy,gonzafirewall/kivy,rnixx/kivy,youprofit/kivy,habibmasuro/kivy,adamkh/kivy,Farkal/kivy,bionoid/kivy,denys-duchier/kivy,janssen/kivy,iamutkarshtiwari/kivy,kived/kivy,el-ethan/kivy,akshayaurora/kivy,cbenhagen/kivy,akshayaurora/kivy,bliz937/kivy,aron-bordin/kivy,dirkjot/kivy,LogicalDash/kivy,inclement/kivy,arlowhite/kivy,arcticshores/kivy,arcticshores/kivy,Ramalus/kivy,gonzafirewall/kivy,el-ethan/kivy,dirkjot/kivy,MiyamotoAkira/kivy,akshayaurora/kivy,LogicalDash/kivy,yoelk/kivy,manthansharma/kivy,bionoid/kivy,janssen/kivy,VinGarcia/kivy,dirkjot/kivy,VinGarcia/kivy,mSenyor/kivy,jffernandez/kivy,matham/kivy,rnixx/kivy,bhargav2408/kivy,ernstp/kivy,vitorio/kivy,KeyWeeUsr/kivy,manashmndl/kivy,jehutting/kivy,MiyamotoAkira/kivy,youprofit/kivy,iamutkarshtiwari/kivy,darkopevec/kivy,MiyamotoAkira/kivy,tony/kivy,Cheaterman/kivy,Ramalus/kivy,KeyWeeUsr/kivy,youprofit/kivy,bob-the-hamster/kivy,manashmndl/kivy,thezawad/kivy,jegger/kivy,Farkal/kivy,KeyWeeUsr/kivy,kived/kivy,andnovar/kivy,arcticshores/kivy,bionoid/kivy,cbenhagen/kivy,el-ethan/kivy,adamkh/kivy,Ramalus/kivy,bliz937/kivy,Shyam10/kivy,ernstp/kivy,tony/kivy,xpndlabs/kivy,darkopevec/kivy,gonzafirewall/kivy,bliz937/kivy,Cheaterman/kivy,bhargav2408/kivy,viralpandey/kivy,JohnHowland/kivy,vipulroxx/kivy,JohnHowland/kivy,kivy/kivy,jkankiewicz/kivy,JohnHowland/kivy,mSenyor/kivy,jkankiewicz/kivy,xpndlabs/kivy,rnixx/kivy,aron-bordin/kivy,jffernandez/kivy,autosportlabs/kivy,vipulroxx/kivy,darkopevec/kivy,kivy/kivy,xiaoyanit/kivy,viralpandey/kivy,habibmasuro/kivy,aron-bordin/kivy,Cheaterman/kivy,manthansharma/kivy,rafalo1333/kivy,viralpandey/kivy,autosportlabs/kivy,jegger/kivy,KeyWeeUsr/kivy,bob-the-hamster/kivy,janssen/kivy,manashmndl/kivy,adamkh/kivy,ernstp/kivy,rafalo1333/kivy,thezawad/kivy,manthansharma/kivy,edubrunaldi/kivy,Cheaterman/kivy,jehutting/kivy,Farkal/kivy,arlowhite/kivy,iamutkarshtiwari/kivy,vipulroxx/kivy,adamkh/kivy,jegger/kivy,jffernandez/kivy,cbenhagen/kivy,autosportlabs/kivy,darkopevec/kivy,yoelk/kivy,vitorio/kivy,angryrancor/kivy,CuriousLearner/kivy,Shyam10/kivy,angryrancor/kivy,angryrancor/kivy,denys-duchier/kivy,jkankiewicz/kivy,arcticshores/kivy,kivy/kivy,MiyamotoAkira/kivy,matham/kivy,bionoid/kivy,inclement/kivy,denys-duchier/kivy,edubrunaldi/kivy,tony/kivy,LogicalDash/kivy,arlowhite/kivy,mSenyor/kivy,vipulroxx/kivy,xiaoyanit/kivy,JohnHowland/kivy,Shyam10/kivy,janssen/kivy,rafalo1333/kivy,xpndlabs/kivy,matham/kivy,aron-bordin/kivy,yoelk/kivy,thezawad/kivy,jegger/kivy,jkankiewicz/kivy,matham/kivy,CuriousLearner/kivy,inclement/kivy,kived/kivy,LogicalDash/kivy,bob-the-hamster/kivy,VinGarcia/kivy,edubrunaldi/kivy,jehutting/kivy,Farkal/kivy,dirkjot/kivy,manthansharma/kivy,denys-duchier/kivy,Shyam10/kivy,andnovar/kivy,bhargav2408/kivy,ernstp/kivy,andnovar/kivy,yoelk/kivy,angryrancor/kivy