Joins two semigroups.
This API is still experimental, so it may change or be removed in future versions. You should not rely on it for production applications.
forall S, a:
(S a) => (S a) => S a
where S is SemigroupJoins two semigroups.
curry(2, (semigroupRight, semigroupLeft) => // eslint-disable-line no-magic-numbers
concat(semigroupLeft, semigroupRight)
)