Cannot add code that starts with % to user buttons

[jsiddall]

Before I even remembered that discussions existed I opened an issue on this:

#1674

However, I do think this is some kind of software issue as the same code worked for me on a different, probably older install (likely using pip install bCNC, but I don't recall anymore).

[GitHubCaps]

@jsiddall The issue is with changes in Python3's configparser. A few files need to be patched to get the buttons to work for both. See #1674 (comment)