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Commit 2019-08-19 17:09 92fa24cf

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feat(data/fin): val simp lemmas (#1347)

feat(data/fin): val simp lemmas
Update fin.lean

Estimated changes

Modified src/data/fin.lean

added theorem fin.cast_add_val

added theorem fin.cast_le_val

added theorem fin.cast_lt_cast_succ

added theorem fin.last_val