Fixed typo that broke cli options.
Added handling of help flag for commands.
CLI options are now returned as a list rather than a dict because it is awkward to use keys to check for options.
Reduced boilerplate code by doing more setup in super class and adding a SatCmd class for commands that require an active satellite connection.
Fixed type in install line for hexdump command.
Fixed command parsing missing arguments after the first and crashing on syntax errors.
Renamed getByAddr function for better clarity.