Update notes for submitted changes

* RevWalk: Annotate methods documented to return "Never null" as @NonNull

94/cf82dbc58089832a2e8be6fdb6e681622f3450

@@ -0,0 +1,7 @@
+Verified+1: Hudson CI
+Code-Review+2: Jonathan Nieder <jrn@google.com>
+Submitted-by: Jonathan Nieder <jrn@google.com>
+Submitted-at: Wed, 17 Jan 2018 21:46:33 -0500
+Reviewed-on: https://git.eclipse.org/r/115576
+Project: jgit/jgit
+Branch: refs/heads/master