- Adds a new `ObjcProperty` type, which wraps our Objective-C objects in
a Rust-backed Rc/Refcell combo. This in general makes understanding
reference counting/storage more digestable when reading through the
codebase and leans more on Rust to do its thing than the Objective-C
runtime.
- Most widgets that need to implement `Layout` now only need to provide
a slot for running a handler with the underlying node.
- Further documentation work ongoing.
- Anchors are now enums, which help in debugging constraint issues.
- Enum types that are acceptable for constraint generation are now
matched at runtime, and provide better error messages if a constraint
can't be satisfied and crashes the app.
- `left` and `right` anchors are now supported on all widgets, fixing an
oversight from early iterations of the framework.
- Reduces `unsafe` usage by a decent amount when setting constraint
pointers for widget types.
- Basic support for `AttributedString` type.
- `Debug` implementations across the board to ease debugging issues.
- Methods that take `Color` and `Font` types now accept an `AsRef` to
make implementing less of a headache.
- Cleanup of the `utils` module.
- Added support for basic Cursor management.
- Added support for NSWindow cancelOperation: callbacks. It's not...
perfect, but it works as a discrete hook.
- Added support for NSProgressIndicator.
- Properly forward Error types from QuickLook generation calls, and
future-proof the ThumbnailQuality enum.
- Add support for configuring Label line break mode.
