message: Update manifest for zcash_history.
diff: @@ -3,6 +3,9 @@ name = "zcash_history"
  version = "0.0.1"
  authors = ["NikVolf <nikvolf@gmail.com>"]
  edition = "2018"
  +license = "MIT/Apache-2.0"
  +documentation = "https://docs.rs/zcash_history/"
  +description = "Library for Zcash blockchain history tools"
  [dev-dependencies]
  assert_matches = "1.3.0"
  