Util 18.5.0

Bug Fixes

• util-core: c.t.concurrent.AsyncSemaphore no longer completes promises while holding
  its intrinsic lock. b3b66cf8

• util-logging: Fix incorrect loggerName in c.t.logging.ScribeHandler which
  prevented the short-circuiting of publishing messages emitted from the ScribeHandler.
  5a8520a5

• util-hashing: Add murmur3, a fast, non-cryptographic hashing function that
  is missing from hashing.
  67ffeb92