markdown/__main__.py: (parse_options): order options alphabetically

[jaalto]

With -h, --help, order the option listing alphabetically.

[waylan]

What is the benefit of this change?

Currently, the options are listed logically. For example, --encoding is listed right after --file as it applies to the input file. Similarly, --extension_configs is listed right after --extensions. And then we group together --quiet, --verbose, and --noisy in that logically progressive order. Seems to me that this is much more helpful to users than to list the options alphabetically.

[facelessuser]

I think this is a highly subjective change. I'm personally a -1 on this. I prefer the logical organization.

[waylan]

I agree that this is subjective. As the maintainers prefer the existing scheme and no persuasive arguments were provided to support the. change, I am closing this as won't fix.