nasapower 4.0.0

Major changes

Adds support for new NASA POWER API v2.0, which includes new hourly data and other major changes to the API and available data.
See https://power.larc.nasa.gov/ for fully detailed changes to the data.
Drops support for the deprecated NASA POWER API V1.0.
Previous versions of nasapower are no longer functional.
Adds new function, query_parameters() to fetch information from the API on individual and all available community/temporal API combination parameters.
Removes SSE community, replaced with RE.
Removes global option for geographic coverage as passed along through the latlon argument of get_power().
Directly parse data from API response rather than downloading data to disk and importing.
The get_power() arguments are changed:
- two new arguments are added,
  - wind_elevation, and
  - wind_surface,
- the temporal_average argument has been superseded by temporal_api to align with the terminology used in the POWER API.
  The temporal_average argument will still work, however, a message will be given if a user still uses temporal_average to alert the user of the change and ask them to update their scripts.