3.14.1.5
========
* Fix handing of SystemBackground [Owen; #738652]
* Summarize queued up notifications [Devyani; #702460]
* Plug an animation object leak [Rui; #739252]
* Improve handling of multi-day events [Andreas; #727302]

Contributors:
  Andreas Brauchli, Devyani Kota, Rui Matos, Owen W. Taylor