Comma blames from parent commit

This is useful for navigating the history of a single line.
2017-08-29 14:24:00 -07:00 · 2017-08-29 14:24:00 -07:00 · 8721c76caa
parent 108cb2cc41
commit 8721c76caa
1 changed files with 5 additions and 0 deletions
--- a/tig.md
+++ b/tig.md
@ -84,3 +84,8 @@ You can substitute `git log` → `tig`.

 | `i` | Change sort header |
 {: .-shortcuts}
+
+### `h` - Blame view
+
+| `,` | Parent commit |
+{: .-shortcuts}