This is an update, which further adds features required for future CustomCrafting updates (or current Patreon version).
It also adds a small experimental feature, that can be enabled via the custom item config.

Changelog

• Added experimental feature to CustomItem, that allows the item to ignore every single NBT, but the namespaced key (Setting the advanced option to false will enable it and meta ignore settings are also ignored). (commit: 782969c)
• Added more methods to the CustomItems utils, to get namespaces or a list of custom items of a namespace. (commit: 37aca6d)
• Smaller changes to MetaSettings and code clean up (commit: 26f2a93)
• Update 1.6.2.16 (commit: 9952c4c)