Implement filter_extremes#169

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henrifroese wants to merge 27 commits intojbesomi:masterfrom

SummerOfCode-NoHate:filter_extremes

Commits on Aug 18, 2020

added MultiIndex DF support

mk2510
and
henrifroese
committed

Commits on Aug 19, 2020

Commits on Aug 25, 2020

Fix the term_frequency formula. Simplify the function body.

mk2510
and
henrifroese
committed

Commits on Aug 28, 2020

Fix formatting errors by rolling back black update.
henrifroese
committed
Merge branch 'filter_extremes' of https://github.com/SummerOfCode-NoHate/texthero into filter_extremes
henrifroese
committed

Commits on Aug 29, 2020

Finish fixing formatting.
henrifroese
committed