rewriting improvements for a few edge-cases (#355)

edge-case rewriting improvements:
- avoid rewriting inside of strings (via wabac.js 2.19.5)
- detect old-html framesets (via wombat 3.7.12)

bump to 2.1.3

package.json

@@ -22,7 +22,7 @@
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.15.4",
     "@shoelace-style/shoelace": "~2.15.1",
-    "@webrecorder/wabac": "^2.19.4",
+    "@webrecorder/wabac": "^2.19.5",
     "bulma": "^0.9.3",
     "electron-log": "^4.4.1",
     "electron-updater": "^5.3.0",