Added support for ferry information.
I have tried to keep the same formats and names as much as possible, even though the ferry departures differ from trains.
Made some formatting changes, also in the current project files. Not sure of your preference of flake8-settings. I usually use max-line-length of 88-100. Now I have used 88 (default for black).
Added support for ferry information. I have tried to keep the same formats and names as much as possible, even though the ferry departures differ from trains.
CLI-example:
-key [api_key_here] -method get-next-ferry-stop -from-harbor "Ekerö"
-key [api_key_here] -method get-next-ferry-stop -from-harbor "Furusund" -date-time "2019-12-24T00:00:00"