Merge pull request #2460 from ZeroX-DG/linethrough-checkbox

Added linethrough checkbox & make it optional

browser/components/MarkdownPreview.js

@@ -483,6 +483,10 @@ export default class MarkdownPreview extends React.Component {
     eventEmitter.on('export:save-md', this.saveAsMdHandler)
     eventEmitter.on('export:save-html', this.saveAsHtmlHandler)
     eventEmitter.on('print', this.printHandler)
+    eventEmitter.on('config-renew', () => {
+      this.markdown.updateConfig()
+      this.rewriteIframe()
+    })
   }
 
   componentWillUnmount () {

browser/components/markdown.styl

@@ -80,6 +80,9 @@ li
     &.checked
       text-decoration line-through
       opacity 0.5
+  &.taskListItem.checked
+    text-decoration line-through
+    opacity 0.5
 div.math-rendered
   text-align center
 .math-failed