Twelvefold Better Combat

This mod is not related to other mods with similar names.
This mods ports some features from Combat Tests to the 1.12.2 version.
This mod may have compatibility issues due to a large amount of Mixins are used.

Implemented features:

1. Provides a non-linear health bar.
2. Removed "3 seconds invulnerability" after rebirth.
3. Shields can now only block 5 points of melee damage, while a shield with a flag could block double.
4. Cleaving enchantment for axes.
5. Now axes always disable shields for 32 ticks instead of 25% disabling a shield for 5 seconds.
6. Attack damage and attack speed adjustment for pickaxes, axes, shovels, swords and hoes.
7. Improved accuracy of arrows.
8. When drawing a bow for longer than 2 seconds, accuracy will decrease.
9. Arrows can no longer cause a critical damage.