Vim plugin which shows a git diff in the sign column

 Vim plugin which shows a git diff in the 'gutter' (sign column). It shows
 which lines have been added, modified, or removed. You can also preview,
 stage, and undo individual hunks; and stage partial hunks. The plugin also
 provides a hunk text object.
 .
 The signs are always up to date and the plugin never saves your buffer.