Examine source code of Request sender

{
  "manifest_version": 2,
  "name": "Request sender",
  "version": "0.0.1",
  "description": "Send HTTP requests directly from the browser",
  "author": "TheNamlessGuy",
  "homepage_url": "https://github.com/TheNamlessGuy/browser-request-sender",
  "developer": {
    "name": "TheNamlessGuy",
    "url": "https://github.com/TheNamlessGuy/browser-request-sender"
  },
  "icons": {
    "96": "res/icon/96.png"
  },
  "permissions": [
    "tabs",
    "menus",
    "storage",
    "unlimitedStorage",
    "bookmarks"
  ],
  "background": {
    "scripts": [
      "src/communication.js",
      "src/contextmenus.js",
      "src/options/bookmark.js",
      "src/options/opts.js",
      "src/templates.js",
      "src/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "request-sender@TheNamlessGuy.github.io"
    }
  }
}