ButtonBehavior: use new property `min_state_time` in implementation and initialise it to `MIN_STATE_TIME` till it is removed.
ButtonBehavior: use new property `min_state_time` in implementation and initialise it to `MIN_STATE_TIME` till it is removed.

akshayaurora/kivy,aron-bordin/kivy,manthansharma/kivy,autosportlabs/kivy,manthansharma/kivy,janssen/kivy,LogicalDash/kivy,jegger/kivy,jkankiewicz/kivy,LogicalDash/kivy,jkankiewicz/kivy,darkopevec/kivy,autosportlabs/kivy,vitorio/kivy,rafalo1333/kivy,el-ethan/kivy,cbenhagen/kivy,arlowhite/kivy,tony/kivy,kivy/kivy,akshayaurora/kivy,inclement/kivy,LogicalDash/kivy,bionoid/kivy,rafalo1333/kivy,rnixx/kivy,rnixx/kivy,el-ethan/kivy,kived/kivy,cbenhagen/kivy,darkopevec/kivy,janssen/kivy,CuriousLearner/kivy,matham/kivy,bionoid/kivy,KeyWeeUsr/kivy,matham/kivy,andnovar/kivy,janssen/kivy,CuriousLearner/kivy,inclement/kivy,darkopevec/kivy,rafalo1333/kivy,KeyWeeUsr/kivy,Cheaterman/kivy,aron-bordin/kivy,jkankiewicz/kivy,Cheaterman/kivy,jkankiewicz/kivy,bionoid/kivy,Cheaterman/kivy,tony/kivy,akshayaurora/kivy,manthansharma/kivy,aron-bordin/kivy,LogicalDash/kivy,autosportlabs/kivy,Cheaterman/kivy,matham/kivy,rnixx/kivy,tony/kivy,arlowhite/kivy,cbenhagen/kivy,kivy/kivy,darkopevec/kivy,kived/kivy,KeyWeeUsr/kivy,bionoid/kivy,matham/kivy,kivy/kivy,jegger/kivy,andnovar/kivy,KeyWeeUsr/kivy,jegger/kivy,vitorio/kivy,manthansharma/kivy,inclement/kivy,andnovar/kivy,jegger/kivy,kived/kivy,CuriousLearner/kivy,janssen/kivy,el-ethan/kivy,arlowhite/kivy,vitorio/kivy,aron-bordin/kivy