Only copy the required xcasset files into the user bundle
Only copy the required xcasset files into the user bundle

Before all xcassets used in pod sources where unconditionally integrated into the bundle's car file, even if the xcasset file wasn't referenced by the podspec. Now only files, which are explicitly specified in the spec, will be integrated.

mglidden/CocoaPods,mglidden/CocoaPods,mglidden/CocoaPods