get_asset_info          Returns metadata and information about Tesouro
                        Direto bond types
get_cache_folder        Returns the cache directory path
get_td_names            Returns the available asset names at the
                        Tesouro Direto (TD) website
get_yield_curve         Gets the current yield curve
plot_td_series          Plot Tesouro Direto Time Series Data
plot_yield_curve        Plot the ANBIMA Yield Curve
td_get                  Downloads data for Brazilian government bonds
                        directly from the website
td_get_current          Returns current TD prices and yields
