updating changelog preparing for release

Signed-off-by: vsoch <vsoch@users.noreply.github.com>

CHANGELOG.md

@@ -14,6 +14,7 @@ represented by the pull requests that fixed them. Critical items to know are:
 Versions correspond with GitHub releases that can be referenced with @ using actions.
 
 ## [master](https://github.com/vsoch/pull-request-action/tree/master) (master)
+  - bugfix of missing from branch with scheduled run (1.0.16)
   - forgot to add assignees (1.0.15)
   - output and environment variables for PR number and return codes (1.0.5)
   - added support for reviewer (individual and team) assignments (1.0.4)