This is a minor update.
It fixes many bugs that were reported over the past month as well as many performance improvements, especially for items like the Slime Bucket. The AddditionsAPIPostInitializationEvent has also been added which lets you know when the initialization finished so you can acquire the final durability of the Custom Items. Special thanks to @DrkMatr1984 for creating a pull request containing all the necessary code to make this work, his help has been extremely important.
This is a relatively big update, as it changes a lot of the core components and could cause issues. If you encounter any problems. let me know immediately!