HPZone_convert_dates    Converts all relevant columns in the dataset to
                        Date types.
HPZone_fields           Endpoints and fields available in the HPZone
                        API
HPZone_make_valid       Takes a list of fields or endpoints and
                        corrects them. This allows for short hand usage
                        without having to check the documentation, e.g.
                        'Date of onset' instead of 'Date_of_onset'
HPZone_necessary_scope
                        Determines the necessary scope for a given list
                        of fields.
HPZone_request          Performs a HPZone request with the given
                        parameters.
HPZone_request_paginated
                        Performs a HPZone request with the given
                        parameters.
HPZone_request_query    Performs a HPZone request with the given
                        parameters.
HPZone_request_raw      Performs a HPZone request with the given
                        parameters.
HPZone_setup            Initialisation function to define API
                        credentials. This function must be called
                        before anything else, as the details supplied
                        in this call are required for use. Note that
                        client_id and client_secret should preferably
                        not be supplied in this call, but rather stored
                        using [HPZone_store_credentials()].
HPZone_store_credentials
                        Safely stores the HPZone API details, so you
                        don't need to put them in your script. The
                        default OS keyring backend is used through the
                        keyring-package. Values are stored in an
                        encrypted format to prevent harvesting by other
                        applications. Note that the actual values are
                        not supplied as arguments, but requested using
                        rstudioapi password prompts.
test_HPZone_token       Tests the supplied HPZone token against the
                        token endpoint. Note that this does not check
                        the type of access, only the functionality of
                        the token.
