*unlockables menu now ready to use(try unlocking new items there!)
*gold is now really permanent, you can close the game and your gold will be saved there.
*Added 3 new items, fully functional(unlock them from the unlockable menu, then buy them in the shop).
*Added rare variation of big skull boss, which is a bit harder.
*Gryphon's Goods Shop now sells a group of 4 random items, collected from a pool of currently unlocked items.
*Background improved.
*Changed boss life bar color, for better contrast.