This update fixes an advancement bug, changes cave decorations, and adds 1.16 compatibility.
Free Changes:

• Add 1.16 compatibility *
• Decreased chance of bottom cave decorations generating

Premium Changes:

• Fixed issues with Ender Explorer advancement not properly registering.

* 1.16 compatibility is not guaranteed! The changes that were made mean that all versions from now onward should work with 1.16. There may be minor issues, but a majority of functionality should be there.
I do not expect any issues to show up, but of course, there is no way to tell until 1.16 releases, hence why this disclaimer is here. Any issues that emerge with 1.16 will be fixed promptly.