3.0.0 Beta 8

• Added two static constructors for SocketHttpServer
  • createForDirectAccess() — Creates an instance appropriate for direct access by the public
  • createForBehindProxy() — Creates an instance appropriate for use when behind a proxy service such as nginx'
• The constructor of SocketHttpServer has changed to require an instance of ServerSocketFactory and ClientFactory, as well as accepting an array of middleware and a list of allowed HTTP methods. Use SocketHttpServer::createForDirectAccess() to create a server with similar defaults as the previous constructor.
• Added ForwardedMiddleware and associated Forwarded class and ForwardedHeaderType enum. This middleware parses either Forwarded or X-Forwarded-For headers to determine the original client address when used behind a proxy supporting these headers.
• Added AllowedMethodsMiddleware which limits the allowed HTTP verbs used by requests. This middleware is used automatically by SocketHttpServer. The allowed methods can be specified through a constructor parameter, using null to disable the middleware.
• Removed the $allowedMethods argument from the constructors of HttpDriverFactory, Http1Driver, and Http2Driver since this functionality is now handled by the middleware above.
• Added query-related methods to Request to get individual query keys in a manner similar to headers.