Rename Blame#hunk_by_line to Blame#for_line.
Rename Blame#hunk_by_line to Blame#for_line.

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