Metamorph

This is a small patch that features a couple of tweaks.

Compatible with McLib 2.0.2. It doesn't mean that future versions of McLib would be incompatible, but older versions are most likely incompatible.

• Added empty label to body part list when no limb selected
• Added an option to specify the maximum of recent morphs that can be stored
• Added Lighting option to item and block morphs
• Changed the key names to be prettier (using McLib's utility)
• Fixed max length of entity selector text fields (reported by Frtc)