message: deps: update quickcheck to 0.8
  Closes
diff: @@ -40,7 +40,7 @@ utf8-ranges = "1.0.1"
  # For examples.
  lazy_static = "1"
  # For property based tests.
  -quickcheck = { version = "0.7", default-features = false }
  +quickcheck = { version = "0.8", default-features = false }
  # For generating random test data.
  rand = "0.6.5"
  # To check README's example
  