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Commit 2019-04-12 12:59 3fe449e1

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feat(algebra/free): free magma, semigroup, monoid (#735)

Estimated changes

added def free_magma.lift
added theorem free_magma.lift_mul
added theorem free_magma.lift_of
added theorem free_magma.lift_unique
added def free_magma.map
added theorem free_magma.map_mul'
added theorem free_magma.map_mul
added theorem free_magma.map_of
added theorem free_magma.map_pure
added theorem free_magma.mul_bind
added theorem free_magma.mul_map_seq
added theorem free_magma.mul_seq
added theorem free_magma.pure_bind
added theorem free_magma.pure_seq
added def free_magma.repr'
added theorem free_magma.traverse_eq
added inductive free_magma
added theorem free_semigroup.lift_of
added theorem free_semigroup.map_mul
added theorem free_semigroup.map_of
added theorem free_semigroup.mul_seq
added def free_semigroup
added inductive magma.free_semigroup.r