Remove unnecessary colorama dependency

[li-wjohnson]

Description of new feature, or changes

Remove colorama dependency.
Colorama was used for two things:

• colorama.init calls, which had no effect. init wraps sys.stdout / stderr, which aren't used here.
• a few ansi color codes, which have been replaced by a handful of constants

Checklist

• Your branch is up-to-date with the base branch
• You've included at least one test if this is a new feature
• All tests are passing

Related Issues and Discussions

Related to manrajgrover/halo#151

People to notify

[manrajgrover]

@li-wjohnson Thanks for raising this PR!

Wouldn't this impact Windows output? Can you share output on Windows system (cmd, powershell)?

[li-wjohnson]

I don't have any sample output, but it should be obvious colorama has no effect here. There is an init() followed by a deinit(), with no printing in between. Colorama only wraps stout/stderr.

[li-wjohnson]

Just for you, I ran this on cmd.exe:
Before:

After: