v20.8.1 Farewell to 2020

Features

• Add Plugin system for STT, TTS, Wake Word engines and Audioservices (#2594) by @forslund and @JarbasAl
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• Add ProcessStatus to all Mycroft Services providing a consistent interface for querying their state. (#2648) by @krisgesling and @forslund
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• Add new CPS_extend_timeout method to Common Play Skill (#2666) by @JarbasAl
• Add support for doas, a sudo alternative (#2690) by @pixelherodev
• Local changes to Skill settings will now persist until a change is made to remote settings (#2707) by @forslund
• Add config flag to disable all Skill settings syncing (#2734) by @JarbasAl
• Add Mozilla TTS support (#2713) by @domcross
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• Validate the Mozilla TTS connection (#2828) by @JarbasAl
• Add engine configuration option for Polly TTS (#2706) by @joshuajaharwood
• Add self.gui.connected() to check if a GUI is connected (#2682) by @JarbasAl
• Add self.gui.get() to safely access values in GUI dict (#2820) by @krisgesling
• Add self.gui.release() to signal that the Skill is no longer using the GUI (#2766) by @JarbasAl
• Upgrade Mycroft Skills Kit to v0.3.16 (#2688) by @krisgesling
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Bugfixes

Skills

• Don't reload skill if a mod time is in the future (#2659) by @forslund
• Initialize status members before bus handlers (#2681) by @forslund
• Fix dialog_renderer when no dialog or locale directory exists (#2685) by @katridi
• Reorder operations to ensure removed Skills are first unloaded. (#2823) by @krisgesling
• ensure load_status is initialized on load failure (#2735) by @krisgesling
• Handle anonymous adapt intent (#2767) by @forslund
• Fix intent_api following refactor (#2786) by @JarbasAl

Audio Services

• Fix Audioservice startup on system time change (#2689) by @forslund
• Fix UnboundLocalError in AudioProducer (#2780) by @dalgwen
• Add the --no-video flag to VLC audio backend (#2791) by @JarbasAl
• Improve safety of audioservice calls, particularly in VK tests (#2804) by @forslund

Other Mycroft Services

• Settings - Add optional message argument (#2704) by @krisgesling
• Update to pyee 8.1.0 - improved handling of multithreaded environments (#2724) by @forslund
• Config - Stop location being referenced before assignment (#2809) by @PureTryOut
• Ensure messagebus is connected before reporting that the Enclosure service is ready (#2758) by @krisgesling
• Unshadow Message class in _handle_pairing_complete (#2790) by @forslund
• Fix typo preventing STT plugins to load (#2748) by @forslund

TTS Engines

• Mimic - Fix duration_stretch configuration (#2691) by @forslund
• Mimic - Fix memory calculation causing build failures on ARM (#2716) by @el-tocino
• Mimic - Handle missing binary properly (#2718) by @forslund
• Mimic - Send correct conf to Mimic when used as fallback (#2829) by @forslund
• Mimic2 - Fix cache directory error (#2800) by @chrisveilleux
• Google - Fix pronounciation of "m." (#2699) by @gaganpreet
• Google - Upgrade gTTS to v2.2.0 (#2763) by @marvin-w
• Google - Upgrade gTTS to v2.2.2 to fix Google voice (#2831) by @krisgesling

Wake Word Engines

• PocketSphinx - Fallback to English model if configured model does not exist (#2692) by @katridi
• Porcupine Wake Word - Update for newer engines (#2722) by @forslund

GUI

• Fix missing skill_id parameter for page interaction and focus events (#2732) by @AIIX
• Fix missing remove page implementation, show idle if all pages removed (#2781) by @AIIX
• Don't clear namespace on every system page call (#2814) by @AIIX
• Use the correct delegate, fix layouts, autofit text for System TextFrame (#2815) by @AIIX

Tests

• Voight Kampff - add Given steps to set test timeout (#2663) by @forslund
• Add basic test cases for GUI interface (#2697) by @forslund
• Voight Kampff - fix reset of patched config (#2742) by @forslund
• Only build Mimic once during travis tests (#2745) by @forslund
• Enable simultaneous CI jobs and provide Mycroft logs on failure (#2762) by @krisgesling
• Voight Kampff - Improve error handling (#2793) by @forslund
• Voight Kampff - add method to wait for audio service (#2808) by @krisgesling
• Implement GitHub Actions for linting and unit tests (#2819) by @chrisveilleux
• Use OS default gcc in github workflow (#2830) by @forslund
• Run unit tests on python 3.9 (#2739) by @forslund

Documentation

• Fix documentation for Lock.exists() (#2721) by @Nihvel
• Point sphinxdocs to new requirements.txt location (#2731) by @forslund
• Add Plugin base classes APIs to readthedocs (#2736) by @forslund
• Fix readthedocs build (#2749) by @forslund
• Clarify that gui.clear does not close a Skill (#2769) by @krisgesling
• Fix simple typo, retruns -> returns (#2785) by @timgates42
• Add filesystem documentation to readthedocs (#2805) by @forslund

Other changes

• Refactor intent service (#2599) by @forslund
• DeepSpeech - Remove English-only error. DS now supports other languages. (#2705) by @el-tocino
• Setup - allow variants of arch (archarm, ...) to fetch dependencies (#2725) by @emphasize
• Add warning if MSM is using an appstore other than Mycroft Marketplace (#2737) by @JarbasAl
• Setup - Enable utf-8 encoding during dev-setup.sh (#2746) by @forslund
• Run CLA check on all branches (#2759) by @krisgesling
• Remove six from dependencies (#2782) by @PureTryOut
• Refactor - common bus connection method (#2792) by @krisgesling
• Refactor - stop speaking (#2821) by @forslund