Streamlined the messagehandler functions
Changed the callback help/usage paradigm to use something that may actually work (I don't know whether it does)
Rationalized the way that configuration files are located and loaded, guarded against TOCTOU
Formatted source files.
Fixed command-line arguments processing.
Added ability to specify logging levels by name (ALL, FINE, FINER...)
Generally fixed unnoticed problems in Configuration and Priestess
classes. Stopped spuriously committing configuration file path to
preferences store, changed some Priestess methods to use her own
tokenizer, and fixed a null check in setCultableChannels method.
Moved bot token to configuration file, which must be supplied manually before Priestess is first run.
Added Preferences to configuration file search path.
Added command "is minecraft running".
Removed Herobrine.
