1.2.1

Dedicated libraries have been created to avoid using external libraries that increase the plugin's size and performance.
The plugin goes from 945KB to 184KB.

3 new mission types have been added:
- Inventory : Check the contents of the player's inventory with the ability to remove items upon mission completion
- Achievement : Check the in-game achievements (individual for each player) for mission completion. Further information will be described in the documentation.
- Biome : Check the biome the player is in