Alpha 0.0.8c

What's new in this release:
~ Bug fixes regarding mines in Tournament and Battle modes
~ Improved realtime shadow quality and game frame rate
- temporarly removed tread marks due to graphical corruption issues (they will return when a new method is found)

Internal activation codes:

• Windows: 5b87b5f1-3863-4fbe-9012-44778530e488
• Linux: e0e6d4de-133f-42d5-861e-419282457c1f
• macOs: 82795fa0-17dd-4f1b-88f2-173537fea91d