Migrate from `optparse` to `argparse` (e.g. for color with Python >=3.14) — pull request welcome?

[hartwork]

Hi @jrfonseca,

it has come to my attention that…

• gprof2dot is still using optparse and
• stdlib argparse has enabled color output with Python 3.14 by now.

I would like to offer a migration to argparse if that welcome. What do you think?

Best, Sebastian

[jrfonseca]

If you could do that to that would be great. Thanks!

[hartwork]

@jrfonseca cool! Pull request #108 is ready for review now 🍻