v0.6 - Font & Python API Updates

Changes

• Added default font (for TextLabel nodes created from scripting).
• Now use font id to keep track of fonts instead of font path.  Allow multiple fonts to be defined with one file.
• Added new property to `CollisionShape2D` nodes `is_under_mouse` to check if node is under mouse cursor.
• Added `seika.assets` python module which contains `Texture` and `Font`.
• Added get/set functions for Textures (Sprite) and Fonts (TextLabel).
• Can create a font with `Font.create` function.
• `Sprite` nodes now have `draw_source` property.

Version

Engine: v0.36.1

Editor v0.2.0