3.17.4 - "A Face like a Cat's Arse"
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* Add empty state to assist with initial setup [Bastian; #711832]
* Fix observing channels from other handlers [Florian; #752422]
* Update new-message indicator to clarify its purpose [Florian; #751542]
* Misc. bug fixes [Florian; #733327, #752968, #750689]

Contributors:
  Bastian Ilsø, Florian Müllner

Translations:
  Yosef Or Boczko [he], Pedro Albuquerque [pt], Marek Černocký [cs]