Update v0.4

This update includes a major overhaul to the UI including new artwork and fonts. UI elements were made more consistent for better clarity. Four minibosses were added to the game which are encountered at the halfway point. Bosses and minibosses now spawn in special rooms each with unique features and traps. Non-projection blob shadows were added to provide shadows without affecting performance on mobile devices.

Major changes:

1. New UI including elements, color design, icons, and fonts
2. Improved 3D models for units, equipment, and map objects
3. 4 new minibosses and special boss rooms
4. Added non-projection blob shadows with better performance
5. QoL improvements
6. Performance improvements
7. Balancing
8. Bug fixes