[EasyNpc] Added the documentation.
[EasyNpc] Added missing header to some source files.
[Client] Added a help window that shows keybindings.
[Client] Some changed to the documentation window.
[Client] Changed so that Running is default when moving by keyboard.
[Client] Updated credits.
[MapEditor] Fixed an error when copying a map item that didn't have ItemData.
[Client] Changed the text of Error inform to red in chat box.
[Client] Some changed to the documentation window.
[MapEditor] Removed some duplicate classes and added some fixes.
Altered most IO Operations to use NIO.2 and AutoCloseable try statements