Feature: option for "no ansi color"

When storing or re-using the output from op5util, it would be nice to be able to skip the ansi coloring.

* Current workaround

```
op5util status | gsed -r "s/\x1B\[([0-9]{1,3}((;[0-9]{1,3})*)?)?[m|K]//g" > some.file
```
