chore: version bump 0.4.0

Author: daiyanze

packages/gatsby-theme-pitayan/package.json

@@ -80,5 +80,5 @@
     "serve": "gatsby serve",
     "start": "npm run develop"
   },
-  "version": "0.3.0"
+  "version": "0.4.0"
 }

packages/www/package.json

@@ -10,7 +10,7 @@
     "clean": "gatsby clean"
   },
   "dependencies": {
-    "@pitayan/gatsby-theme-pitayan": "^0.3.0",
+    "@pitayan/gatsby-theme-pitayan": "^0.4.0",
     "@raae/gatsby-remark-oembed": "^0.3.1",
     "gatsby": "^4.12.1",
     "gatsby-plugin-feed": "^4.11.1",