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Commit 2019-03-05 09:21 8070c05c

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feat(data/set/lattice): more rules for disjoint sets

Estimated changes

Modified src/data/set/lattice.lean

added theorem set.disjoint_compl

modified theorem set.disjoint_diff

added theorem set.disjoint_image_image

added theorem set.disjoint_singleton_left

added theorem set.disjoint_singleton_right