Initialize site obs/forecasts and fetch/update obs for BSRN sites.


fetch(api, site, start, end) Retrieve observation data for a BSRN site between start and end.
initialize_site_forecasts(api, site) Create forecasts for each variable in bsrn_variables at the site
initialize_site_observations(api, site) Creates an observation at the site for each variable in bsrn_variables.
update_observation_data(api, sites, …[, …]) Post new observation data to all BSRN observations from start to end.