Update packages and remove the instrument step (#854)

* several updates
* avoid the instrumented step in tests

packages/svgcanvas/core/clear.js

@@ -0,0 +1,43 @@
+/**
+ * Tools for clear.
+ * @module clear
+ * @license MIT
+ * @copyright 2011 Jeff Schiller
+ */
+import { NS } from './namespaces.js'
+
+let svgCanvas = null
+
+/**
+* @function module:clear.init
+* @param {module:clear.SvgCanvas#init} clearContext
+* @returns {void}
+*/
+export const init = (canvas) => {
+  svgCanvas = canvas
+}
+
+export const clearSvgContentElementInit = () => {
+  const curConfig = svgCanvas.getCurConfig()
+  const { dimensions } = curConfig
+  const el = svgCanvas.getSvgContent()
+  // empty
+  while (el.firstChild) { el.removeChild(el.firstChild) }
+
+  // TODO: Clear out all other attributes first?
+  const pel = svgCanvas.getSvgRoot()
+  el.setAttribute('id', 'svgcontent')
+  el.setAttribute('width', dimensions[0])
+  el.setAttribute('height', dimensions[1])
+  el.setAttribute('x', dimensions[0])
+  el.setAttribute('y', dimensions[1])
+  el.setAttribute('overflow', curConfig.show_outside_canvas ? 'visible' : 'hidden')
+  el.setAttribute('xmlns', NS.SVG)
+  el.setAttribute('xmlns:se', NS.SE)
+  el.setAttribute('xmlns:xlink', NS.XLINK)
+  pel.appendChild(el)
+
+  // TODO: make this string optional and set by the client
+  const comment = svgCanvas.getDOMDocument().createComment(' Created with SVG-edit - https://github.com/SVG-Edit/svgedit')
+  svgCanvas.getSvgContent().append(comment)
+}