Patch notes for version 0.11.0.0

Gameplay:
- Added new field sizes: 7v7 and 6v6.
- Added new stadium: Nippon Stadium.
- Added new balls: Pact Flare and Pact 90 Yellow.

Graphics:
- Improved grass texture.
- Improved 3D grass appearance.
- Slightly improved 3D grass performance.

UI:
- Improved ball selection menu.
- Improved map selection menu.
- Fixed alt tab chat messages bug.

Other:
- Allow server admin to change server password and max players.