Merged upstream release 3.3.1
This release contains upstream Shattered PD v3.3.1, plus this fork's additions:
- a wand of anti-magic, which temporarily suppresses a target's magical abilities;
- a flying carpet artifact, for flying over terrain at high speed;
- a Forgetful challenge, which makes identification of potions and scrolls temporary;
- a stone of double enchantment, which imbues a weapon with two enchantments simultaneously; and
- a rare four-leaf clover plant, which grants loot-related luck when trampled.
