Converts values in variables (longs) to strings and vice-versa in any base from 2 to 16. Some features include:
* Supports full 32-bit signed values,
* Converts using any base from 2 to 16 (binary to hexadecimal),
* Defaults to variable widths (outputs entire number, regardless of size) and optionally uses fixed widths, left/right justification (zeros/spaces),
* Optional digit groupings (2 to 8 characters) with customizable separators; ex: 1000000 becomes 1,000,000 and 7AB14B9C becomes 7AB1_4B9C.