Fix type preservation in UICollection
__repr__
Rename Caption.size property to font_size
Don't Instantiate GridPoint or GridPointState
Add scale_x and scale_y properties to UISprite*
Texture and Font should expose their properties
Add extend() method to UICollection
Windows: scripts subdirectory not checked for .py files
Color r, g, b, a properties return None
Recreate RenderTexture when UIGrid is resized
UIEntityCollection::getitem returns mcrfpy.Entity, even if a derived class was submitted
Add pos property as Vector alternative to x,y properties
Add position tuple support to Frame and Sprite constructors
Standardize sprite_index property name across objects*