v0.3.4

• Further relax the rubyzip version requirement to allow 2.x versions
• Fix: Removed --quiet from unrtf arguments. In newer versions this seems to
  suppress the header line which we used as a marker to strip unrtf comments and
  meta data from the command output.

v0.3.3

• Relax rubyzip dependency. Our usage of rubyzip does not require adressing
  CVE-2019-16892 and thus is fine with 1.2, but applications using this Gem
  might use RubyZIP elsewhere too and thus will want to upgrade to >= 1.3.