Examine source code of aTab

{
  "manifest_version": 2,
  "name": "aTab",
  "version": "2.2",
  "author": "Michael Zhao",
  "description": "An extension that will replace your new tab with a more productive, aesthetic, and useful interface!",
  "icons": {
    "48": "res/48.png",
    "96": "res/96.png"
  },
  "chrome_settings_overrides": {
    "homepage": "dist/index.html"
  },
  "chrome_url_overrides": {
    "newtab": "dist/index.html"
  },
  "permissions": [
    "<all_urls>",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "atab@michaelzhao.xyz",
      "strict_min_version": "70.0"
    }
  }
}