Update 1.6 Curses

Patch Notes: [list] [*] Curses: A new entity can now appear in the dungeon. Once unlocked, a reaper will offer you a chance to be cursed in exchange for a reward. The curses are generally things that make the game harder or alter gameplay for a few floors, with a reward at the end. [*] New Item: Rat Cage: Item makes you invulnerable to rats but take bonus damage from all other sources. [*] New Skill: Shrink Ray: A usable skill that cuts the power of a nearby enemy in half without altering the rewards you get for killing it. [*] Reduced permanent upgrade prices. I have reduced the price of most items by roughly half. This allows you to get stronger at a quicker pace, leading to you experiencing the full game much quicker. [*] Various bug fixes, number tweaks, and dungeon generation cleanup. [/list] This update doesn't give a huge advantage to scores so for now I will not be resetting the leaderboard as I have done in the past. Currently this update is only available for windows. Hopefully I can get the Mac build uploaded later tonight. Thanks for playing!