Added WoW commands.
Updated CHANGES.
Removed trailing whitespace.
Removed trailing whitespace.
Added config for text-wrap width.
Added more to clean target.
The following were changed in this commit:

* set_long and setlong were changed to set_desc and setdesc.
* cmd_get was changed to cmd_take.
* Setting a long description now uses io_lib:format in order to properly
  escape things like quotes.
* wrapline was changed to not quote long strings with the latest
  io_lib:format change.
* Wrap width has been moved into configuration.
Added command aliases.
Added section for command parsing overhaul.