DataStax Ruby Driver 3.2.0

Apache Cassandra 2.2 and 3.x compatible release

Features:

• RUBY-294 Support MRI 2.4.x. Thanks, @lautis, for this contribution!

Bug Fixes:

• RUBY-291 Driver fails to connect to cluster when a table column type has a quoted name.
• RUBY-292 Driver sporadically crashes with "undefined method 'ip'" error.
  Thanks, @grosser, for the fix!
• RUBY-295 When a custom address resolver is configured,
  consult it when handling all host events, and thus prevent the creation of invalid Host objects.