I've added km, qm, cbm, pc as default units. And for km the corresponding conversions. Additionally I changed getReferenceUnit to return the reference unit as a Phrase so it can be translated. The translation is especially helpful in front end for non English stores because you can simply add the reference units to your dictionary for example to translate "pc" to "Stk.".
After adding the options I sort the options in order to keep them grouped.
I've added km, qm, cbm, pc as default units. And for km the corresponding conversions. Additionally I changed
getReferenceUnit
to return the reference unit as a Phrase so it can be translated. The translation is especially helpful in front end for non English stores because you can simply add the reference units to your dictionary for example to translate "pc" to "Stk.". After adding the options I sort the options in order to keep them grouped.