z: fast tab switcher

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_appName__",
  "version": "0.0.4",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "scripts/contentScript.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "tabs",
    "windows",
    "commands",
    "http://*/*",
    "https://*/*"
  ],
  "commands": {
    "toggle-tab-search": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      },
      "description": "Toggle tab search panel"
    }
  }
}