Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2018-05-29 03:47 a6be5235

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feat(data/list/basic): map_erase, map_diff, map_union

Estimated changes

Modified data/list/basic.lean

added theorem list.map_diff

added theorem list.map_erase

added theorem list.map_foldl_erase

Modified data/multiset.lean

added theorem multiset.map_union