* NEW: Tools are now saved on disk when stopping server.
* BUG: Tools now behave correctly when a player disconnects and then reconnects.
* BUG: The new tool message now only appears while actually creating a new tool, not when instanciating a CommandTool object.
* BUG: Using /ctool new when holding nothing does not throw a NPE anymore.
* BUG: The CommandToolEdition NBT Tag is now correctly checked.