ribir-v0.4.0-alpha.23

Features

• core: The Render::dirty_phase method has been added to allow widgets to mark only the paint phase as dirty when it is modified. (#689 @M-Adoo)
• core: Supports Provider to dirty the tree if it's a state writer. (#689 @M-Adoo)
• core: Added the built-in field providers to provide data to its descendants. (#690 @M-Adoo)
• core: Added Variant to support building widgets with variables across Providers. (#690 @M-Adoo)
• macros: Added the part_reader! macro to generate a partial reader from a reference of a reader. (#688 @M-Adoo)
• macros: The simple_declare now supports the stateless meta attribute, #[simple_declare(stateless)]. (#688 @M-Adoo)

Fixed

• Core: PartData allows the use of a reference to create a write reference, which is unsafe. Introduce PartRef and PartMut to replace it. (#690 @M-Adoo)

Breading

• core: Removed PartData. (#690 @M-Adoo)