Released alpha version 0.2.2 (performance + balancing)

Major work to port codebase to GLES2 (Godot 3.5) for improved compatibility and performance

• Hopefully better web performance and Mac support
• Updated leveling thresholds and monster stats for more gradual progression
• Improved spawning mechanism to consider player direction
• Introduced guarded loot for more interesting gameplay. These are scattered throughout the map
• New monsters activated gradually if not selected by player