• Added EXPERIMENTAL cleanup_interval attribute to Mojo::IOLoop.
  
• Added EXPERIMENTAL max_leftover_size attribute to Mojo::Content.
  
• Replaced handle method in Mojo::IOLoop with stream method.
  
• Replaced writing and not_writing methods in Mojo::IOWatcher with watch method.
  
• Replaced is_finished method in Mojo::IOLoop::Stream with is_writing method.
  
• Replaced add method in Mojo::IOWatcher with io method.
  
• Reduced memory usage of Mojo::Headers significantly.
  
• Fixed finish event timing in Mojo::Server::Daemon.