The Haddocks for the Applicative instance for (Either e) says since 3.0,
but AFAICT it should be since 4.3.0.0.

--
Russell O'Connor                                      <http://r6.ca/>
``All talk about `theft,''' the general counsel of the American Graphophone
Company wrote, ``is the merest claptrap, for there exists no property in
ideas musical, literary or artistic, except as defined by statute.''
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