Feature request: function to select the "best" unit among a list #59
Description
Sometimes you want to convert a given unit to either X, Y or Z, and you need to select the best.
It would be very handy in cases where you need for example to design an UI, and the UI (due for example to client requests) can only have units m and cm, but not for example dm, in or dam.
It is quite simple to convert the unit to all of them, then simply select the first one with value above (or closest to?) your minimum value (prefixMin in unitmath lingo).
This could be a nice little handy feature to be added to this nice little handy library!