Brains Out 0.1.3 - Halloween update

In this update we have added and improved some aspects of the game:

- Halloween theme - new zombie blocks, new environment.

- New game mode - "Endless" - the speed of falling zombies will not change after completing levels.

- New game mode - "Practice" - Zombies no longer fall automatically. Rotate, move and learn how to place it in the pit!

- Added an explanation of how to play and improved the description of the controls on the keyboard and controller.

- Added graphics quality settings.

- Improved pit readability (enabled by default, can be disabled in settings).

Known issues: We are aware of performance issues on some devices and we are putting all efforts on resolving it.