Update notes for submitted changes

* Store in IndexChangedEvent if it was caused by JGit itself

e9/e150fdd24dbeb54df614a4d47da3074c766b28

@@ -0,0 +1,7 @@
+Verified+1: CI Bot
+Code-Review+2: Thomas Wolf <thomas.wolf@paranor.ch>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Sun, 13 May 2018 17:57:20 -0400
+Reviewed-on: https://git.eclipse.org/r/122548
+Project: jgit/jgit
+Branch: refs/heads/master