message: updated to use new `compression` prop
diff: * DESC: Common test/demo slides for all library features
  * DEPS: Used by various demos (./demos/browser, ./demos/node, etc.)
  * VER.: 3.5.0
  -* BLD.: 20210103
  +* BLD.: 20210109
  */
  var isIE11 = typeof window !== 'undefined' && !!window['MSInputMethodContext'] && !!document['documentMode'];
  @@ -25,7 +25,8 @@ var NODEJS = false;
  if (NODEJS) { var LOGO_STARLABS; }
  // Constants
  -var TESTMODE = false
  +var COMPRESS = true; //false; // TEST: `compression` write prop
  +var TESTMODE = false;
  var CUST_NAME = 'S.T.A.R. Laboratories';
  var USER_NAME = 'Barry Allen';
  var COLOR_RED = 'FF0000';
  @@ -274,10 +275,10 @@ function execGenSlidesFuncs(type) {
  // LAST: Export Presentation
  if ( NODEJS ) {
  - return pptx.writeFile('PptxGenJS_Demo_Node_'+type+'_'+getTimestamp());
  + return pptx.writeFile({ fileName: 'PptxGenJS_Demo_Node_' + type + '_' + getTimestamp() });
  }
  else {
  - return pptx.writeFile('PptxGenJS_Demo_Browser_'+type+'_'+getTimestamp());
  + return pptx.writeFile({ fileName: 'PptxGenJS_Demo_Browser_' + type + '_' + getTimestamp(), compression: COMPRESS });
  }
  }
  