Core htmx Shadow DOM Tests

• handles 204 NO CONTENT responses properly8ms ‣

  this.server.respondWith('GET', '/test', [204, {}, 'No Content!'])
  var btn = make('<button hx-get="/test">Click Me!</button>')
  btn.click()
  btn.innerHTML.should.equal('Click Me!')
  this.server.respond()
  btn.innerHTML.should.equal('Click Me!')