Update API to 2.0.6

AWE-API: new commands and refactoring

* added relight command
* added biome support in DC commands
* minor refactoring of undo entries

Merge branch 'master' of https://github.com/SBPrime/AsyncWorldEdit-API

AsyncWorldEdit-API v2.0.3: Added custom class scanner filter

Minor change or IWorldEditConfig

Awe API: Added Direct Chunk operations to API

Updated the API so its no longer dependent on Bukkit API

AsyncWorldEdit API v1.2.0

* Disk undo storage
* Player undo state
* WorldEdit configuration

Moved messageSystem to proper folder

Merge branch of premium API v1.0.1'