• IRCcat: Fix and improve service. Thanks, @JanKoppe.
• IRCcat: Add newline character after message. Thanks again, @JanKoppe.
• CI: Run tests on Python 3.10
• Allow parameters of the file service to be defined on a per-file basis.
  Thanks, @Gulaschcowboy!
• Add software tests for file service.
• Add feature to publish mqttwarn status information. Thanks, @psyciknz!