Update version to 1.3.3 and add font size adjustment features

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pan-converter",
-  "version": "1.3.4",
+  "version": "1.3.6",
   "description": "Cross-platform Markdown editor and converter using Pandoc",
   "main": "src/main.js",
   "scripts": {
@@ -33,6 +33,7 @@
     "electron-store": "^10.1.0",
     "highlight.js": "^11.11.1",
     "marked": "^16.2.1",
+    "tslib": "^2.8.1",
     "xlsx": "^0.18.5"
   },
   "build": {
@@ -58,7 +59,7 @@
       {
         "ext": "markdown",
         "name": "Markdown Document",
-        "description": "Markdown Document", 
+        "description": "Markdown Document",
         "mimeType": "text/markdown",
         "role": "Editor"
       }