DB48X: HP48-like RPL implementation for DM42

[c3d]

Release v0.4.6 of DB48X is out.

https://github.com/c3d/DB48X-on-DM42/rel...tag/v0.4.6

The main features are related to the user interface: undo, command-line history, text selection, cut/copy/paste, search and replace.

There is also the "Cycle" command I discussed earlier mapped to the EEX key. For example, it cycles between 0.2 and 1/5, between primary bases for binary numbers, or between polar and rectangular representations for complex numbers.

A few serious bug fixes too, including one that could cause memory corruption when drawing in graphic objects (GROB).

Please give it a whirl and let me know what you find.