Serve podcasts behind a HTTP proxy

This release adds a new "ListingUrl" field in the config that the program uses to generate podcast routes. This allows the user to have separate IP and listing addresses.

Allow custom HTTP listening ports

This release allows users to specify the port the application should listen for HTTP requests. This may be helpful when port 80 is already in use by another application.

The release that uses a config file

The major new addition of this release is the usage of config files rather than constantly building a configuration at runtime. This will be appreciated by anyone that needs to serve the same podcast multiple times. See the readme for usage.

1.0.1

Users can now select the IP address on their computer that they would like to bind to.

1.0.0

Initial MVP. See readme.md for usage.