Minor updates and bug fixes

    CHANGELOG v1.0.1:
    
      - Changed delete flag from "!" to "#" to be more Linux script friendly
      - Fix minor bug which caused some unexpected serial read errors
      - Added additional option to output all configuration options to serial. A single "?" sent
        will output contents of the alert array. Two "??" will output a previous, plus all config
      - Fixed the way date/time is parsed
      - Other minor changes