-Persistant spells now also persist on special levels as intended.
-Page Up instead of Ins now sets an ally spell to be the only one
cast.
-Added new item suffixes.
-Cryptic shrine no longer lowers incantations for spells where you
already have more that the maximum allowed.
-Fixed error which causes enemies to stop casting spells. Appearantly
the floor() function was changed in GML 8.0 without my notice.
-Shops now have a minimum of 15 items in inventory.