Figure out what to do with Euro sign translation in `deroff.rs`

[necaris]

The code in deroff.py translates the "Eu" and "eu" specifications to octal 244, which is "¤" (general currency symbol) -- however, since the "Do" and "ct" specifications translate to "$" and "ct" respectively, it would seem that "€" is actually more appropriate. Thoughts?

[scooter-dangle]

Yeah, the actual € seems way more appropriate but maybe the original deroff has a reason for not using chars outside of Latin-1? Something to investigate more closely when we're able to do full completion generation to see if that messes with the shell completions.

[purew]

Aye, should probably first do a translation to rust that mimicks the pyhton-script completely. That way we can verify functionality with python before improving or changing the behaviour.

[necaris]

Opened #20 to revert to the Python script behavior until we know what we want to change it to 😄