build_url               Build a valid URL for downloading a file from
                        CHCD. Follows the format detailed here
                        <https://collaboration.cmc.ec.gc.ca/cmc/climate/Get_More_Data_Plus_de_donnees/>.
dl_csv                  Downloads a csv from the internet
get_climatedata         Get historical climate data for the specified
                        time and place. The data returned will be raw
                        data as originally reported. As many weather
                        stations historically use manual entry to
                        report this data this is likely to mean that
                        data cleaning will be required for sensible
                        usage.
get_station             Find climate station or stations from a given
                        place. This also confirms if a given climate
                        station ID is valid.
get_timecode            Converts a text based interval into a CHCD
                        timecode
stations_near           Finds climate stations near to a given
                        location.
test_climatefile        Given a file and a list of expected columns
                        this will test to make sure our data looks
                        good. Returns TRUE if all expected columns are
                        present in the file, otherwise returns FALSE.
