DB48X: HP48-like RPL implementation for DM42

[spiff72]

Before attempting to create an issue on the github repo, I wanted to make sure I wasn't doing something wrong.

I was trying to convert Mpa to psi here and when I do it via the "quick" menu, I get "divide error, inconsistent units".

I'm wondering if this is because I have a custom units.csv file, which I am attaching here.

I feel like I ran into something like this early after the UNITS features were added, so maybe it's a bug?