Examine source code of FireTitle

{
  "manifest_version": 2,
  "name": "Crappy Firetitle",
  "version": "0.1.13resigned1",
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "64": "icons/crapbow.png"
  },
  "applications": {
    "gecko": {
      "id": "crappyfiretitle@chezlefab.net",
      "strict_min_version": "57.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "sessions"
  ],
  "background": {
    "scripts": [
      "lib/lib.js",
      "options/default.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "match_about_blank": true,
      "js": [
        "content-script.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_action": {
    "default_icon": {
      "64": "icons/crapbow.png"
    },
    "default_title": "FireTitle",
    "default_popup": "options/popup.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Comma",
        "mac": "Alt+Comma"
      },
      "description": "Go to FireTitle options page"
    }
  }
}