Core htmx API test

• should find all properly from elt1ms ‣

  var div = make("<div><div class='c1 c2 c3'><div class='c1 c2'><div class='c1'></div>")
  htmx.findAll(div, '.c1').length.should.equal(3)
  htmx.findAll(div, '.c2').length.should.equal(2)
  htmx.findAll(div, '.c3').length.should.equal(1)