Reki here. This patch fixes a few bugs with the update and makes the key system a lot more convenient. I have more minor fixes and balance tweaks coming, but I wanted to get this patch out earlier since it solves a few key issues. Hope it helps!

Im hearing reports of a bug where eating hearts does not give their abilities. If you have any information on this bug, please let me know in the Discord server, as its proving very difficult to replicate and pin down. Other bug and crash reports are also welcome there.
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PATCH NOTES:
- Keys are no longer tied to areas and are no longer items. They autoequip when near a lock block.
- Poi heart passive has been changed to fit the new key system.
- Kinkin trigger effect now resets timer when triggered while timer is active.
- Calamity Card axe now attacks with you during swap attacks as well.
- Fixed an incorrect Calamity Card description.
- Fixed a softlock caused by teleporting to Garden without killing the Garden boss.
- Hopefully fixed a crash involving Foomies.
- Fixed spiky status effect taking up status effect slots despite having expired.
- Fixed tentacle achievement counting enemy tentacles towards total.