Release v4.0.0-theta-001

What's Changed

• Giraffe Sample by @dbrattli in #67
• Giraffe tests (wip) by @dbrattli in #68
• Remove giraffe by @dbrattli in #69
• Update to theta-003 by @dbrattli in #71
• Update deps remove microbit by @dbrattli in #72
• Cleanup of ast and tkinter modules by @dbrattli in #74

Full Changelog: v0.22.0...v4.0.0-theta-001