cover: skip group if all methods are ignored
cover: skip group if all methods are ignored

tpickett66/rugged,libgit2/rugged,saraid/rugged,tpickett66/rugged,Acidburn0zzz/rugged,Acidburn0zzz/rugged,saraid/rugged,Acidburn0zzz/rugged,tpickett66/rugged,libgit2/rugged,saraid/rugged,libgit2/rugged