#2612 known_units() broken

[Peter Simons]

This command fails, because "conversions_to_base_units" hasn't been created yet:

kill(all)$ load(ezunits)$ known_units();

map: improper argument: conversions_to_base_units
#0: derived_units()(ezunits_functions.mac line 476)
#1: known_units()(ezunits_functions.mac line 479)
 -- an error. To debug this try: debugmode(true);

[Robert Dodier]

Fixed by commit 5ead80ab. Closing this report as fixed.