- overall type-hint improvements
- **UnityPy.classes**
- replace hard-coded UnityPy.classes with generated class stubs
- UnityPy.classes.legacy_patch to provide backward compatibility
- classes are all parsed and dumped/stored using typetrees now
- **TypeTree**
- use a hierarchical instead of a flat structure
- list to Node.m_Children
- rewrite the typetree read and write functions to reflect this
- **remove map typetree type type due to its multi-dict nature**
- **Exporter**
- extended Sprite-mesh support (solves some dicings automatically)