Greedy Greg alpha update 0.1.1

I've just pushed a new build.

Changelog:
- Tall Bandit now resets when you leave and reenter the screen.
- Enemy bullet speed was nerfed. (6 -> 5 for bandits; 8 -> 6 for cactus)
- Small layout changes to the first level, such as removing the gap to the shield chest.
- Slightly increased player's "hop" height (NOT the full jump height that is performed when holding down the button).
- Fixed a bug where you could get hurt by the tiny birds while they were invisible.