Better errors for openweather API (#227)

* enhanced error handling for openweathermap api errors

* changed Cod to Code and removed the extra else from fetch fn

* changed the Cod to Code from Unmarshal fn

* Fix error message casing in openWeatherErrorResponseHandler

---------

Co-authored-by: Kordian Bruck <kordianbruck@users.noreply.github.com>

Add sunrise/sunset time to openweathermap (#182)

* Corrected temperatures in openweathermap.org backend

* Set the sunrise/sunset information from the api

* Print the astronomy information if present

* Fix rebase gone wrong

---------

Co-authored-by: alessandro <campoloalex@gmail.com>

Remove references to obsolete forecast.io backend

Add go module and update to Go 1.17 as minimum requirement.

fix config var name in wwo backend

release version 1.0