Examine source code of watched.li improvements

{
  "manifest_version": 2,
  "name": "watched.li improvements",
  "version": "1.1.2resigned1",
  "description": "Displays a table with not-yet-watched episodes on watched.li",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://watched.li/",
        "*://watched.li/following/index"
      ],
      "js": [
        "src/content/improvements.js"
      ],
      "css": [
        "src/content/improvements.css"
      ]
    }
  ],
  "options_ui": {
    "page": "src/settings/options.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{40b286e7-1de8-4d23-85e8-3d1efceee198}"
    }
  }
}