Changes in Beta 3:

• Add support for MC 1.21
• Add the "Size Variance" BetterAI mechanic, to add natural variation in animal sizes that can be propagated through breeding
• Add newer mob heads to HeadDrops mechanic
• Improve default block list for TreeLopper mechanic
• Increase the default limit of the TreeLopper mechanic, and switch block search method to produce better results when hitting limit
• Improve compatibility with other plugins when using the /cb mech list box

CraftBook 5 is a complete rewrite of CraftBook. See this article for more information, and checkout the docs to read more about the plugin.