• Code name "Leaf Fluttering In Wind", this is a major release.
  
• Increased Perl version requirement to 5.10.1.
  
• Renamed Mojo::IOLoop::EventEmitter to Mojo::EventEmitter.
  
• Replaced one_tick method in Mojo::IOWatcher with start and stop methods.
  
• Added EXPERIMENTAL contains method to Mojo::Path.
  
• Added EXPERIMENTAL auto_upgrade attribute to Mojo::Content::Single.
  
• Added EXPERIMENTAL boundary method to Mojo::Content.
  
• Added EXPERIMENTAL slice method to Mojo::Collection.
  
• Added EXPERIMENTAL build and parse methods to Mojo::IOLoop::Resolver.
  
• Updated WebSocket implementation to ietf-17.
  
• Improved many modules to use events instead of callbacks.
  
• Improved message parser performance slightly.
  
• Improved Mojo::IOLoop to die if started twice.
  
• Improved setuidgid in Mojo::Server::Daemon.
  
• Improved Mojo::IOWatcher backend detection.
  
• Improved Mojo::IOLoop::Stream to handle unexpected connection close more gracefully.
  
• Fixed many portability issues.
  
• Fixed on_finish callback to work consistently with all servers.
  
• Fixed on_finish callback to work consistently with the user agent.
  
• Fixed big memory and file descriptor leak in the TLS code of Mojo::IOLoop::Server.
  
• Fixed small memory leak in Mojolicious.
  
• Fixed small memory leak in Mojo::DOM.
  
• Fixed small memory leak in Mojo::Message.
  
• Fixed small boundary bug in Mojo::Content::MultiPart.
  
• Fixed small formatting bug in Mojo::Headers.
  
• Fixed small proxy message generation bug.
  
• Fixed small detection bug in Mojolicious::Types.