Calls 42.beta.1

Released: 26 January 2021

Maybe noteworthy:

• Bugfix release
  
• Updated libcall-ui to v0.0.1
  

Detailed changes:

• ci: Deploy documentation as gitlab pages
  
• readme: Mention that documentation is available as gitlab page
  
• dbus-manager: Fix critical when transforming call states
  
• Update libcall-ui subproject to v0.0.1