message: fix: html characters not escaped in code blocks (fixes
  if lang is not specified
diff: @@ -5,6 +5,13 @@ import * as slugify from 'slugify';
  import * as Remarkable from 'remarkable';
  import { StringMap } from './';
  +function HTMLescape(html: string): string {
  + return document.createElement('div')
  + .appendChild(document.createTextNode(html))
  + .parentElement
  + .innerHTML;
  +}
  +
  declare var Prism: any;
  const md = new Remarkable({
  html: true,
  @@ -15,7 +22,7 @@ const md = new Remarkable({
  if (lang === 'json') lang = 'js';
  let grammar = Prism.languages[lang];
  // fallback to click
  - if (!grammar) return str;
  + if (!grammar) return HTMLescape(str);
  return Prism.highlight(str, grammar);
  }
  });
  