Change comap methods to contramap #142
Description
As an accident of history, comap is misnamed and should be changed to contramap. Contramap should be added and comap deprecated and removed in a later version. See #139 (comment).
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As an accident of history, comap is misnamed and should be changed to contramap. Contramap should be added and comap deprecated and removed in a later version. See #139 (comment).