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Commit 2021-07-12 14:22 66cc624c

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feat(data/list/basic): more lemmas about permutations_aux2 (#8198)

Estimated changes

Modified src/data/list/basic.lean

added theorem list.map_map_permutations_aux2

modified theorem list.map_permutations_aux2

added theorem list.permutations_aux2_comp_append

added theorem list.permutations_aux2_snd_eq