Examine source code of Zach Whaley

{
  "manifest_version" : 2 ,
  "name" : "Squashed Merge Message",
  "version" : "4.13",
  "description" : "Use Pull Request description as Squashed and Merged commit messages",
  "icons" : {
    "16" : "squash-16x16.png",
    "48" : "squash-48x48.png",
    "128" : "squash-128x128.png"
  },
  "author": "Zach Whaley <zachbwhaley@gmail.com>",
  "homepage_url" : "https://github.com/zachwhaley/squashed-merge-message",
  "permissions" : [
    "https://github.com/*" ,
    "contextMenus" ,
    "activeTab" 
  ],
  "browser_action" : {
    "default_icon" : {
      "16" : "squash-16x16.png",
      "24" : "squash-24x24.png",
      "32" : "squash-32x32.png"
    }
  },
  "optional_permissions" : [
    "http://*/*" ,
    "https://*/*" 
  ],
  "background" : {
    "scripts" : [
      "webext-domain-permission-toggle.js" ,
      "webext-dynamic-content-scripts.js" ,
      "background.js" 
    ],
    "persistent" : false 
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://github.com/*" 
      ],
      "js" : [
        "content.js" 
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{288e9779-25bd-4310-b02a-23efdcca0419}"
    }
  }
}