Demo Update - Version 0.5.4

This update fixes a number of bugs discovered during the Next Fest.

V 0.5.4

Items:
Increased health potion restoration to 60%.
Reduced potion cooldown times.
Reduced mushroom stat restoration to 15%.

Units:
Spoderbro and Big Spoderbro will no longer spawn on water tiles.

Other:
Fixed a bug where the player would not respawn correctly.
Fixed a bug where the client could enter a second gameover screen.
Fixed a bug causing the cave rats not to spawn.
Fixed a bug where crafted materials would not register with the recipe book.
Fixed a bug where the Steam version of the game would not exit gracefully if launched with Steam
not running or logged out.