Core htmx API test

• swaps content properly (with select)3ms ‣

  var output = make('<output id="output"/>')
  htmx.swap('#output', '<div><p id="select-me">Swapped!</p></div>', { swapStyle: 'innerHTML' }, { select: '#select-me' })
  output.innerHTML.should.be.equal('<p id="select-me">Swapped!</p>')