Game Demo Updated to Version 0.5.0

Lots of fixes, here is a summary:

Digging hole on the same tile will no longer allow finding new stuff
Some tiles were not diggable
Dug objects should no longer intersect with bushes/grass
Potential crash if you mash keys while training or sleeping seems fixed
Torch no longer respawns in desert ruins
Player hands now react to light and dark
Tent no longer shows damage when hit
Enemies will no longer block the bottom stair
Some levels were tweaked and things moved around
Bug that prevented pitching tent fixed
Bug that caused clouds to remain dark or light after training/sleeping fixed
Campfire light should no longer work through walls