Examine source code of Blasebuddy

{
  "manifest_version": 2,
  "name": "Blasebuddy",
  "version": "1.2",
  "description": "Adds useful features to Blaseball",
  "icons": {
    "48": "icons/buddy-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.blaseball.com/*"
      ],
      "js": [
        "apibuddy.js",
        "blasebuddy.js"
      ],
      "css": [
        "buddyStyle.css"
      ]
    }
  ]
}