• Deprecated direct hash access to the flash in Mojolicious::Controller.
  
• Added EXPERIMENTAL group function to Mojolicious::Lite.
  
• Added EXPERIMENTAL build_frame and parse_frame methods to Mojo::Transaction::WebSocket.
  
• Added EXPERIMENTAL accepts attribute to Mojo::IOLoop::Server.
  
• Added EXPERIMENTAL profile helper.
  
• Added EXPERIMENTAL binary support to Mojo::Transaction::WebSocket.
  
• Updated WebSocket implementation to ietf-16.
  
• Changed default upgrade timeout of Hypnotoad from 30 to 60 seconds.
  
• Improved accept performance of all built-in web servers by up to 1000% with the EV backend.
  
• Improved connection_timeout method in Mojo::IOLoop by allowing it to be called as a class method.
  
• Improved CSS of some built-in templates.
  
• Improved resilience of HTTP parser.
  
• Fixed CSS of built-in exception template.
  
• Fixed close event bug in Mojo::IOLoop.
  
• Fixed small redirect_to bug. (judofyr, kraih)
  
• Fixed small attribute selector bug in Mojo::DOM::CSS.
  
• Fixed small Unicode bug in Mojolicious::Plugin::EPRenderer.
  
• Fixed a few small route bugs.
  
• Fixed Perl 5.8.7 compatibility.