=== Ruby posix_mq 2.3.0 - updates for Ruby 2.3+ / 2016-02-02 23:28 UTC

  This release updates our POSIX_MQ#close to match the idempotent
  IO#close behavior under Ruby 2.3 and later.  Previous Ruby versions
  continue to be supported, but POSIX_MQ#close remains non-idempotent
  when built against old Ruby versions.

  4 changes since v2.2.0:

        enable frozen_string_literal for Ruby 2.3+
        support idempotent POSIX_MQ#close
        README: remove cgit and ssoma references
        build: use '--local' domain for dev gem install