• Removed client_challenge, client_handshake, server_handshake and server_open methods from
  Mojo::Transaction::WebSocket. (batman, kraih)
  
• Removed is_writing method from Mojo::Transaction.
  
• Removed upgrade event from Mojo::Transaction::HTTP.
  
• Deprecated Mojo::Transaction::WebSocket::build_frame and Mojo::Transaction::WebSocket::parse_frame in favor of
  Mojo::WebSocket::build_frame and Mojo::WebSocket::parse_frame. (batman)
  
• Replaced deprecated proxy method in Mojo::Message::Request with an attribute.
  
• Added SNI support to all built-in web servers. (bpmedley, kraih)
  
• Added module Mojo::WebSocket. (batman)
  
• Added established attribute to Mojo::Transaction::WebSocket.
  
• Added completed method to Mojo::Transaction.
  
• Updated jQuery to version 2.2.0.
  
• Improved performance of Mojo::Server::Daemon and Mojo::UserAgent slightly.
  
• Improved mtime attribute in Mojo::Asset::Memory to default to the value of $^T.
  
• Improved app generator command to generate more portable scripts.
  
• Fixed a few timing bugs.
  
• Fixed url_for to handle fragments correctly.