* {{Bug|1328920}} Update Yahoo Search Plugin (sync with Firefox) [20161231].
* {{Bug|1329186}} (1) Use asyncOpen2() and (2) change nsILoadInfo.SEC_NORMAL to SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL when using a SystemPrincipal.
* {{Bug| 1329401}} Rollup updates for FeedConverter.js sync with Firefox as at [20161231].
In Progress/waiting for review:
* {{Bug|357097}} "Play a sound" textboxes are not editable, and don't disable Preview button when nothing has been selected.