Examine source code of ignore-e

{
  "manifest_version": 2,
  "name": "ignore-e",
  "version": "1.0",
  "description": "Ignore `e`-keystrokes in GitHub and Confluence",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "ignore-e.js"
      ]
    }
  ]
}