v6.0.0 - Prerelease 2

What's Changed

• Add test to prevent future gesture detection regressions by @rorystephenson in #1584
• Ignore gestures on closed RichAnimationWidget when using FadeRAWA by @JaffaKetchup in #1591
• Replace CustomPoint with extension methods on Point by @rorystephenson in #1585
• Support desktop (click and drag) rotation by @JaffaKetchup in #1592
• Refactor tile removal by @rorystephenson in #1596
• Simplify workflows by @JaffaKetchup in #1597
• Fix some polygon edge cases, avoid unecessary work, and tidy up the code by @ignatz in #1598
• Fix polygon draw batching by @ignatz in #1599

Full Changelog: v6.0.0-dev.1...v6.0.0-dev.2