diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9df6cc6..0f4bbc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+<a name="1.9.1"></a>
+## [1.9.1](https://github.com/showdownjs/showdown/compare/1.9.0...1.9.1) (2019-11-02)
+
+
+### Bug Fixes
+
+* **openLinksInNewWindow:** add rel="noopener noreferrer" to links ([1cd281f](https://github.com/showdownjs/showdown/commit/1cd281f)), closes [#670](https://github.com/showdownjs/showdown/issues/670)
+
+
+
 <a name="1.9.0"></a>
 # [1.9.0](https://github.com/showdownjs/showdown/compare/1.8.7...1.9.0) (2018-11-10)
 
diff --git a/dist/showdown.js b/dist/showdown.js
index b6809fd..7fc44af 100644
Binary files a/dist/showdown.js and b/dist/showdown.js differ
diff --git a/dist/showdown.min.js b/dist/showdown.min.js
index f21c30e..fb64306 100644
Binary files a/dist/showdown.min.js and b/dist/showdown.min.js differ
diff --git a/package.json b/package.json
index bc9ca72..af6fef3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "showdown",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "description": "A Markdown to HTML converter written in Javascript",
   "author": "Estevão Santos",
   "homepage": "http://showdownjs.com/",
diff --git a/src/converter.js b/src/converter.js
index bf11cc9..4eaec0e 100644
--- a/src/converter.js
+++ b/src/converter.js
@@ -45,10 +45,10 @@ showdown.Converter = function (converterOptions) {
        */
       setConvFlavor = setFlavor,
 
-    /**
-     * Metadata of the document
-     * @type {{parsed: {}, raw: string, format: string}}
-     */
+      /**
+       * Metadata of the document
+       * @type {{parsed: {}, raw: string, format: string}}
+       */
       metadata = {
         parsed: {},
         raw: '',
@@ -107,7 +107,7 @@ showdown.Converter = function (converterOptions) {
           'Please inform the developer that the extension should be updated!');
         legacyExtensionLoading(showdown.extensions[ext], ext);
         return;
-      // END LEGACY SUPPORT CODE
+        // END LEGACY SUPPORT CODE
 
       } else if (!showdown.helper.isUndefined(extensions[ext])) {
         ext = extensions[ext];
diff --git a/src/helpers.js b/src/helpers.js
index ff9d433..acf3630 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -394,7 +394,7 @@ showdown.helper.padEnd = function padEnd (str, targetLength, padString) {
  * POLYFILLS
  */
 // use this instead of builtin is undefined for IE8 compatibility
-if (typeof(console) === 'undefined') {
+if (typeof console === 'undefined') {
   console = {
     warn: function (msg) {
       'use strict';
diff --git a/src/subParsers/anchors.js b/src/subParsers/anchors.js
index 1971c38..efa2954 100644
--- a/src/subParsers/anchors.js
+++ b/src/subParsers/anchors.js
@@ -66,7 +66,7 @@ showdown.subParser('anchors', function (text, options, globals) {
 
   // normal cases
   text = text.replace(/\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<?([\S]+?(?:\([\S]*?\)[\S]*?)?)>?(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
-                      writeAnchorTag);
+    writeAnchorTag);
 
   // handle reference-style shortcuts: [link text]
   // These must come last in case you've also got [link test][1]
diff --git a/src/subParsers/codeSpans.js b/src/subParsers/codeSpans.js
index 090234d..59fe694 100644
--- a/src/subParsers/codeSpans.js
+++ b/src/subParsers/codeSpans.js
@@ -28,7 +28,7 @@ showdown.subParser('codeSpans', function (text, options, globals) {
 
   text = globals.converter._dispatch('codeSpans.before', text, options, globals);
 
-  if (typeof(text) === 'undefined') {
+  if (typeof text === 'undefined') {
     text = '';
   }
   text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
diff --git a/src/subParsers/hashHTMLBlocks.js b/src/subParsers/hashHTMLBlocks.js
index b16b103..43e38b5 100644
--- a/src/subParsers/hashHTMLBlocks.js
+++ b/src/subParsers/hashHTMLBlocks.js
@@ -70,7 +70,7 @@ showdown.subParser('hashHTMLBlocks', function (text, options, globals) {
 
       //2. Split the text in that position
       var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
-      //3. Match recursively
+          //3. Match recursively
           newSubText1 = showdown.helper.replaceRecursiveRegExp(subTexts[1], repFunc, patLeft, patRight, 'im');
 
       // prevent an infinite loop
diff --git a/src/subParsers/headers.js b/src/subParsers/headers.js
index 2d0e8a3..b08c4d7 100644
--- a/src/subParsers/headers.js
+++ b/src/subParsers/headers.js
@@ -5,13 +5,13 @@ showdown.subParser('headers', function (text, options, globals) {
 
   var headerLevelStart = (isNaN(parseInt(options.headerLevelStart))) ? 1 : parseInt(options.headerLevelStart),
 
-  // Set text-style headers:
-  //	Header 1
-  //	========
-  //
-  //	Header 2
-  //	--------
-  //
+      // Set text-style headers:
+      //	Header 1
+      //	========
+      //
+      //	Header 2
+      //	--------
+      //
       setextRegexH1 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
       setextRegexH2 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;
 
diff --git a/src/subParsers/tables.js b/src/subParsers/tables.js
index ff79830..1f3e956 100644
--- a/src/subParsers/tables.js
+++ b/src/subParsers/tables.js
@@ -6,7 +6,7 @@ showdown.subParser('tables', function (text, options, globals) {
   }
 
   var tableRgx       = /^ {0,3}\|?.+\|.+\n {0,3}\|?[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:[-=]){2,}[\s\S]+?(?:\n\n|¨0)/gm,
-    //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
+      //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
       singeColTblRgx = /^ {0,3}\|.+\|[ \t]*\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n( {0,3}\|.+\|[ \t]*\n)*(?:\n|¨0)/gm;
 
   function parseStyles (sLine) {