connect_to_wordbank     Connect to the Wordbank database
fit_aoa                 Fit age of acquisition estimates for Wordbank
                        data
fit_vocab_quantiles     Fit quantiles to vocabulary sizes using
                        quantile regression
get_administration_data
                        Get the Wordbank by-administration data
get_crossling_data      Get item-by-age summary statistics for items
                        across languages
get_crossling_items     Get the uni_lemmas available in Wordbank
get_datasets            Get the Wordbank data sources
get_instrument_data     Get the Wordbank administration-by-item data
get_instruments         Get the Wordbank instruments
get_item_data           Get the Wordbank by-item data
get_wordbank_args       Get database connection arguments
summarise_items         Get item-by-age summary statistics
