Add default error message.
Better document getters/setters for Arena class.
Use static reference to logger.
Woops, fix boolean check on logging.
Allow for configurable log-file nomenclature.
- Fix NPE on Null Logger
- Log arena loading to the log-file.
Properly log commands in-case of usage or help being shown.
Document KotHLogger and fix logging commands by removing duplication of
command logging by both Bukkit API and this plugin.
Make sure the command sender is in the right world when using sethill or
setwarp commands.