Fixed
- Negated predicates support the logic operator API now (fixed via #276 by @solnic)
- Fixed circular require warning (issue #279 closed via #282 by @landongrindheim)
- Validating keys against an array with non-hash members no longer crashes (issue #283 fixed via #284 by @beechnut and issue #289 fixed via #288 by @tadeusz-niemiec)