Standardize sprite_index property name across objects*
Add global_position property to nested UI elements
Standardize default position arguments across constructors
Add rotation support to UIDrawable objects
Texture and Font should expose their properties
Add move() and resize() methods to UIDrawable
Create automated API documentation extraction tool
Add extend() method to UICollection
Fix type preservation in UICollection
__repr__
Add Vector arithmetic helper methods
Create inline C++ documentation system
Generate Python type stub files (.pyi)
Grid constructor should accept grid_size tuple