v1.20.3

What's Changed

• [CI] Add dev release GH Action by @webfiltered in #3910
• docs: enhance README with development setup and troubleshooting guides by @christian-byrne in #3920
• [docs] add READMEs for major folders by @christian-byrne in #3923
• Add tests for ChatHistoryWidget and related features by @christian-byrne in #3921
• Hide manager button in missing nodes dialog when manager is not installed by @christian-byrne in #3925
• Fix: Close user popover on button clicks by @christian-byrne in #3928
• Add testing documentation guides for frontend tests by @christian-byrne in #3927
• docs: improve README development section organization by @christian-byrne in #3929
• 1.20.3 by @comfy-pr-bot in #3932

Full Changelog: v1.20.2...v1.20.3