You can now make your custom items damageable! Just set "damageable" to true in your item yml file under "item", and then set
"maxDurability", and optionally "itemDamage"!
Currently, this is only supported with custom-textured items, but will be supported with all custom items soon!
Code (YAML):
item:
textureID
: 42
damageable
: true
durability
: 10
itemDamage
: 0