Investigate behaviour for forecast_at_place

[csparpa]

If you need to access forecaster's will_have_storm(), will_have_hurricane(), etc., which one_call doesn't give access to (as far as I could find) but don't care about the frequency, "3h" instead of "daily" does the trick.

Weirdly enough, this won't work even with a new API key:

forecast = mgr.forecast_at_place('Roma', 'daily').forecast # Invalid API key

but this does work:
forecast = mgr.forecast_at_place('Roma', '3h').forecast

Not sure if this is a problem in pyowm or on the openweathermaps side, but this workaround helped me (pyowm==3.2.0).

Originally posted by @ividal in #316 (comment)