OpenWeatherMap API 2.5 deprecation

[Ryuno-Ki]

Hey there 👋

I recently received an e-mail by OpenWeatherMap that they are going to sundown API 2.5 in June this year.

They were so kind to link to https://openweathermap.org/one-call-transfer for an upgrade path.

Since I'm using OpenWeatherMap myself I was wondering whether you would be open to a PR upgrading to the new API?
How can we communicate that a new API token will be required? I couldn't come up with a good way for this myself.