Mappet

This first release provides tons of features: states, conditions, expressions, emitter block, trigger block, region block, crafting tables, quests, NPCs, factions, events, scripts, dialogues, quest chains, many commands, custom sound events, target selectors, global triggers, and much more.

Compatible with McLib 2.3, Blockbuster 2.3 and Metamorph 1.2.7. It doesn't mean that future versions of McLib, Blockbuster and Metamorph would be incompatible, but older versions are most likely incompatible.