Core htmx API test

• swap works with a view transition54ms ‣

  var div = make("<div hx-get='/test'></div>")
  div.innerText.should.equal('')
  htmx.swap(div, 'jsswapped', { transition: true })
  div.innerText.should.equal('')
  setTimeout(function() {
    div.innerText.should.equal('jsswapped')
    done()
  }, 50)