Build 1507132

v0.9.0.4 patch notes:

- Arena Master is using the latest Unreal Engine version, which brings around 25% better performance in VR
- Force feedback effects are added on weapon hit
- Weapon collision is removed, shield and sword can now freely overlap each other
- First few enemy waves are now harder
- Enemy characters are no longer stuck sometimes
- Game now properly closes when exited from Steam (overlay) menu