Hearty

Half-container hearts

If the player has an odd max health, the final heart will display a half-container as opposed to a full one.

Half-heart merging

If the player has an odd max health, the final half heart will be completed with the first absorption half-heart.

Double hearts (configurable)

Makes each heart contain 1hp instead of 2hp.

Heart display priority

Makes withered hearts display when the player has both wither and poison.

Custom hearts

See the github's README.md for more info.