Add filter for recent contributors' list

[Rishabh570]

Fixes #202
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[Rishabh570]

@publiclab/reviewers @jywarren @gauravano Work regarding this PR is almost done, please take a look.

[Rishabh570]

@gauravano @publiclab/reviewers This work is complete and updated, please take a look...

[Rishabh570]

This is working as expected now, updated and pushed. Please take a look,

[jywarren]

This is awesome work. Great job! Go ahead and merge it! 🎉 🎉 🎂

[jywarren]

Some of these util functions may be great candidates for unit tests, too! Maybe as a follow-up?

[Rishabh570]

@jywarren Yes, so now I'll start adding documentation and unit tests for small pieces of code and the few remaining features will go side-by-side.

Thanks! 😄