Examine source code of RML (RazzMarkupLanguage)

{
  "manifest_version": 2,
  "name": "RML (RazzMarkupLanguage) Renderer",
  "version": "1.0.0",
  "description": "Firefox extension to render .rml files using RazzMarkupLanguage syntax - educational web development for students!",
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "webNavigation",
    "tabs",
    "<all_urls>",
    "file:///*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "rml-parser.js",
        "content-script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "rml-parser.js",
    "welcome.html",
    "icons/*.png"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "RML Renderer",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "rml-renderer@razzmarkup.dev",
      "strict_min_version": "58.0"
    }
  }
}