Sweet pre-release! This (like all your other work) is very professional, Mattike!
In the QC, I can't quite use the letters (A-F) for hex, because the calculator doesn't parse them. Also, it might be better to convert expressions before making the calculations in other bases (so that 10+10 in binary = 100; maybe split modes to "input" and "output"). And degrees, radians and grads!
Again, super script!