* Move -m and -n command line options into the config file
* Restructure configuration file:
  - Group into "server", "stream", "media", "metadata", "decoders", and
    "encoders"
  - Untangle decoder and encoder:
    o Decoders match on file extensions and convert to a canonical "internal"
      format
    o Encoders create one of the supported stream formats, potentially using
      different parameters (like bitrate)
  - Consistently specify stream format
  - Enable reencoding by selecting an encoder
* Architecturally separate configuration file storage from parsing
  - Allows for different configuration back-ends in the future, like
    YAML, SQL, REST API, ...
* Support roll-back in case of error on (re)load
* Anticipate HTTPS support