v2.1.0

Added

• More primitives for combining fuzzers:
  • either2, either3, either4, either5, either6, either7, either8, either9
  • pick(xs: List<a>) -> Fuzzer<(Int, a)>
  • label_if(str: String, predicate: Bool) -> Void

Changed

• Have bytearray primitives simplify towards the null bytestring (32 zeroes),
  so that it's easier to identify in simplified examples.