Examine source code of Math symbols library

{
  "manifest_version": 2,
  "name": "Math symbols library",
  "version": "1.2",
  "description": "A simple library of mathematical symbols for quick copying into your clipboard with a press of a button with the ability to create upper and lower index text.",
  "homepage_url": "https://github.com/AbzeXYZ/Math-symbols-library",
  "icons": {
    "48": "resources/icon48.png",
    "64": "resources/icon.png"
  },
  "browser_action": {
    "default_icon": "resources/icon48.png",
    "default_title": "Math symbols library",
    "default_popup": "resources/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb7630ac-3d2b-43f7-9df9-766e21194bee}"
    }
  }
}