• Deprecated Mojo::Transaction::success in favor of Mojo::Transaction::result and Mojo::Transaction::error.
  Unfortunately this method is used a lot in legacy code, so this deprecation will be in effect until the next major
  release.
  
• Added support for gzip compression of dynamically generated responses (enable with $app->renderer->compress(1)).
  
• Added EXPERIMENTAL compress attribute to Mojolicious::Renderer.
  
• Added compressed attribute to Mojo::UserAgent::Transactor.
  
• Added EXPERIMENTAL respond method to Mojolicious::Renderer.
  
• Added save_to method to Mojo::Message.
  
• Added gunzip and gzip methods to Mojo::ByteStream.
  
• Added gunzip and gzip functions to Mojo::Util.
  
• Improved HTML5.2 compliance of Mojo::DOM::HTML.
  
• Fixed a bug in Mojo::Transaction::HTTP that prevented the finish event in Mojo::Message::Request from getting
  emitted sometimes.
  
• Fixed a bug in Mojo::Promise where the ioloop attribute was not a weakened reference after object construction.
  
• Fixed a bug where the is_fresh helper could only handle If-None-Match headers with a single etag value.