Update packages and remove the instrument step (#854)

* several updates
* avoid the instrumented step in tests

packages/svgcanvas/core/touch.js

@@ -0,0 +1,51 @@
+// http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+/**
+ *
+ * @param {Event} ev
+ * @returns {void}
+ */
+const touchHandler = (ev) => {
+  ev.preventDefault()
+  const { changedTouches } = ev
+  const first = changedTouches[0]
+
+  let type = ''
+  switch (ev.type) {
+    case 'touchstart': type = 'mousedown'; break
+    case 'touchmove': type = 'mousemove'; break
+    case 'touchend': type = 'mouseup'; break
+    default: return
+  }
+
+  const { screenX, screenY, clientX, clientY } = first
+  const simulatedEvent = new MouseEvent(type, {
+    // Event interface
+    bubbles: true,
+    cancelable: true,
+    // UIEvent interface
+    view: window,
+    detail: 1, // click count
+    // MouseEvent interface (customized)
+    screenX,
+    screenY,
+    clientX,
+    clientY,
+    // MouseEvent interface (defaults) - these could be removed
+    ctrlKey: false,
+    altKey: false,
+    shiftKey: false,
+    metaKey: false,
+    button: 0, // main button (usually left)
+    relatedTarget: null
+  })
+  if (changedTouches.length < 2) {
+    first.target.dispatchEvent(simulatedEvent)
+  }
+}
+
+export const init = (svgCanvas) => {
+  svgCanvas.svgroot.addEventListener('touchstart', touchHandler)
+  svgCanvas.svgroot.addEventListener('touchmove', touchHandler)
+  svgCanvas.svgroot.addEventListener('touchend', touchHandler)
+  svgCanvas.svgroot.addEventListener('touchcancel', touchHandler)
+}