Examine source code of TextCaseEditor

{
  "manifest_version": 2,
  "name": "__MSG_ext_name__",
  "description": "__MSG_ext_description__",
  "version": "1.0.5",
  "default_locale": "en",
  "permissions": [
    "contextMenus",
    "activeTab",
    "tabs",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "textcaseeditor@easytext",
      "strict_min_version": "98.0"
    }
  }
}