feat: sub+sup+imsize markdown renderers

server/modules/rendering/markdown-supsub/renderer.js

@@ -0,0 +1,17 @@
+const mdSub = require('markdown-it-sub')
+const mdSup = require('markdown-it-sup')
+
+// ------------------------------------
+// Markdown - Subscript / Superscript
+// ------------------------------------
+
+module.exports = {
+  init (md, conf) {
+    if (conf.subEnabled) {
+      md.use(mdSub)
+    }
+    if (conf.supEnabled) {
+      md.use(mdSup)
+    }
+  }
+}