Feature request: faster runtime

[calebAtIspot]

Describe Request:

Would be great if path-filtering-orb ran faster.

Examples:

Currently set parameters takes 7 seconds. Combined with the checkout step this can go past a person's attention span ~ https://www.whitehutchinson.com/news/lenews/2017/august/article105.shtml

Supporting Documentation Links:

maybe skip venv creation for extra speed? Also relevant: https://github.com/CircleCI-Public/path-filtering-orb/issues/51

[calebAtIspot]

This issue is kind of vague so I guess a goal could be getting set parameters runtime to ~6 seconds.