message: added IE11 detection and blocking of SVG images
  otherwise the presentation will become corrupted for IE11 users
diff: * DESC: Common test/demo slides for all library features
  * DEPS: Used by various demos (./demos/browser, ./demos/node, etc.)
  * VER.: 3.1.1
  -* BLD.: 20200129
  +* BLD.: 20200130
  */
  +var isIE11 = !!window['MSInputMethodContext'] && !!document['documentMode'];
  // Detect Node.js (NODEJS is ultimately used to determine how to save: either `fs` or web-based, so using fs-detection is perfect)
  var NODEJS = false;
  {
  @@ -2432,8 +2433,8 @@ function genSlides_Image(pptx) {
  // BOTTOM-RIGHT:
  slide.addText('Type: SVG', { x:9.5, y:3.3, w:4.0, h:0.4, color:'0088CC' });
  - slide.addImage({ path:gPaths.wikimedia_svg.path, x:9.5, y:3.8, w:2.0, h:2.0 }); // TEST: `path`
  - slide.addImage({ data:svgBase64, x:11.1, y:5.1, w:1.5, h:1.5 }); // TEST: `data`
  + if (!isIE11) slide.addImage({ path:gPaths.wikimedia_svg.path, x:9.5, y:3.8, w:2.0, h:2.0 }); // TEST: `path`
  + if (!isIE11) slide.addImage({ data:svgBase64, x:11.1, y:5.1, w:1.5, h:1.5 }); // TEST: `data`
  // TEST: Ensure framework corrects for missing all header
  // (Please **DO NOT** pass base64 data without the header! This is a JUNK TEST!)
  