v0.4.17

• Feature: Support parsing authority and additional records from DNS response.
  (#123 by @clue)

• Feature: Support dumping records as part of outgoing binary DNS message.
  (#124 by @clue)

• Feature: Forward compatibility with upcoming Cache v0.6 and Cache v1.0
  (#121 by @clue)

• Improve test suite to add forward compatibility with PHPUnit 7,
  test against PHP 7.3 and use legacy PHPUnit 5 on legacy HHVM.
  (#122 by @clue)