fix(core): update

ts/smartmarkdown.plugins.ts

@@ -1,5 +1,16 @@
-import marked = require('marked');
+
+// third party remark
+import remark from 'remark';
+import remarkHtml from 'remark-html';
+
+export {
+  remark,
+  remarkHtml
+}
+
+// other third party stuff
 import turndown from 'turndown';
+// @ts-ignore
 import * as turndownPluginGfm from 'turndown-plugin-gfm';
 
-export { marked, turndown, turndownPluginGfm };
+export { turndown, turndownPluginGfm };