Fix negator token lookup on sentiment analysis#27

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hugoabonizio wants to merge 4 commits intocadmiumcr:masterfrom

hugoabonizio:fix/negators-set

Commits on Oct 18, 2019

Use a set of negators to fix token lookup
hugoabonizio
committed

Commits on Oct 23, 2019

Fix Luhn summarizer by using integer division
hugoabonizio
committed

Commits on Oct 29, 2019