v0.4.0

• Feature: Resolve relative URIs, add withBase() and resolve()
  (#41, #44)

  $browser = $browser->withBase('http://example.com/');
  $browser->post('/');

• Feature: Resolve URI template placeholders according to RFC 6570
  (#42, #44)

  $browser->post($browser->resolve('/{+path}{?version}', array(
      'path' => 'demo.json',
      'version' => '4'
  )));

• Feature: Resolve and follow redirects to relative URIs
  (#45)

• Feature / BC break: Simplify Request and Response objects.
  Remove Browser::request(), use Browser::send() instead.
  (#37)

  // old
  $browser->request('GET', 'http://www.example.com/');
  
  // new
  $browser->send(new Request('GET', 'http://www.example.com/'));

• Feature / Bc break: Enforce absolute URIs via new Uri class
  (#40, #44)

• Feature: Add Browser::withSender() method
  (#38)

• Feature: Add Sender::createFromLoopDns() function
  (#39)

• Improve documentation and test suite