The package and its documentation are on hex.pm.
If no configuration is specified, the
API layer 23 will be used.
Although this library was only tested with the above layer version, you can
specify a custom source in you
config :telegram_tl, tl_path: "/path/to/mtproto.json", api_version: 23, api_path: "/path/to/api-layer-23.json"