Issue Description:

The mod does seem to have problems in version 1.21.5
Getting the book by creating it (combining a book and an armorstand) just returns a book with Json in it.
Creating the book in version 1.21.4 and then changing the world to version 1.21.5 does work however, and you can make copies of it.

Besides this when trying to turn an armorstand invisible in version 1.21.5 works for a few seconds, but then the armorstands just turns visible again. This also happens when the armorstand have an item in hand.

What happens:

1. Getting book just returns a written book with json
2. Armorstand automatically turns visible after being turned invisible

What you expected to happen:

1. Getting a working book
2. Armorstand stays invisible

Steps to reproduce:

1. Combine book and armorstand in crafting grid
2. Open book and see json

3. Give armorstand arms
4. Give armorstand item in main hand
5. Turn armorstand invisible
6. See that it turns visible within a few seconds
   ...

Affected Versions (Do not use "latest"):

• Minecraft: 1.21.5

• Armor Statues: 2.14.0

• Single Player and/or Server?: Java Realm

• Optifine?: No

Screenshots (Optional)

Most was resolved in the latest update from MuliTanuki. I filed PR #39 to update the help system to match 1.21.5.

Yep, try the most recent 1.21.5 branch. :)