kittest 0.2.0 - Trait based node

kittest::Node was removed in favor of kittest::NodeT, a trait which you implement for your test frameworks
node type to unlock the kittest functionality.

This has several advantages:

• You can add conversions of e.g. Rect types to the one native to your framework.
• You can provide access to data kittest has no knowledge of
• You can implement event / input helpers that use the types from your framework and match your framework's idioms.

Full list of changes:

• Refactor Node to be a trait #13 by @lucasmerlin
• Update rust msrv to 1.81 #10 by @lucasmerlin
• Bump accesskit to 0.18 #9 by @valadaptive
• Bump accesskit to 0.19 #11 by @valadaptive
• Update msrv to 1.84 #12 by @lucasmerlin

0.1.0 - Initial release

Release 0.1.0 - Initial release