Big functionality update

[Liquidream]

New Features

• Added UI settings properties (for easy custom UI theming)
• Fake 3D depth "auto-scaling" of Actors (affects size and walk speed to simulate distance)
• Now made "Scale" an Actor/Obj property
• Actor path-finding now more precisely walks to target point
• Added offset X,Y position for talking overlay sprites
• Actors and Objects can now have animations (via do_anim())
• Can now specify default verb for clicking on inventory items (e.g. LOOK-AT)
• Skip current dialog (left-click/Z)
• Skip cutscene (right-click/X)

Fixes

• Fixed "Walking to Object, then clicking diff Verb does latter"
• Fixed "USE" display (and also sample Game "bucket" logic)
• Fixed hover obj display when executing
• Fixed error if specify invalid sprite state
• Fixed issue for actors without walk anims (defaults to "idle" anim)

Noteworthy/Breaking Changes

• Auto-depth actor scaling is now on by default
• New UI settings properties must be set on game start-up
• Refactored do_anim() function's anim_face param is now face_towards
• Token count and character count have increased a lot as a result of the above changes - meaning less space for actual game content. However, you could always try spanning games across multiple carts, like I just did with my game: "CODE-8"
• enable_mouse property removed - now always on by default