Add __covariant to CKComponentController to avoid casting self.component
Add __covariant to CKComponentController to avoid casting self.component

yiding/componentkit,eczarny/componentkit,dshahidehpour/componentkit,avnerbarr/componentkit,eczarny/componentkit,avnerbarr/componentkit,eczarny/componentkit,yiding/componentkit,avnerbarr/componentkit,yiding/componentkit,dshahidehpour/componentkit,avnerbarr/componentkit,yiding/componentkit,dshahidehpour/componentkit