Examine source code of Reuse Jira Tab

{
  "description": "Reuse ,atching Jira tabs when new links are opened",
  "homepage_url": "https://github.com/andrew-mi/reuse-jira-tab-firefox",
  "manifest_version": 2,
  "name": "Reuse Jira Tab",
  "permissions": [
    "tabs",
    "storage"
  ],
  "incognito": "not_allowed",
  "background": {
    "page": "background.html"
  },
  "version": "0.20",
  "author": "Andrew Mitchell",
  "applications": {
    "gecko": {
      "id": "jid1-3eed05ff-624d-41b5-8b2a-e9ec2e68c26c@andrewmitchell",
      "strict_min_version": "128.0"
    }
  }
}