Migrate from `optparse` to `argparse`?

[hartwork]

Hi!

I was wondering if there is interest or planning to migrate from optparse…

markdown/markdown/__main__.py

Line 59 in 0d6afd1

parser = optparse.OptionParser(usage=usage, description=desc, version=ver, epilog=epilog)

… to argparse? One motivation for that from a user perspective would be that --help output would become more colourful and friendly with Python >=3.14 by default. What do you think?

Best, Sebastian