a0.5.0 Snapshot 4 Changelogs

Additions:
- Added Tile Metadata
Added Beepinators, tiles that play a sound when the player walks above or below them. Beepinators can be configured by right-clicking on a Beepinator tile.
Added Triangle Beepinator
Added Sine Beepinator
Added Square Beepinator
Added Sawtooth Beepinator

Changes:
- 

Removals:
- 

Fixes:
- Fixed a bug where clouds would clip into the background when the game is paused
- Fixed a bug where the entire world would be shifted up by one tile each time the world was saved and loaded again