Plugin does not update
Hey,

I can't get the plugin to update in sketch. The initial version from `skpm create` is there, but now that I changed something, when I run `npm run build` Sketch does not reflect the changes.

I don't get errors and it says `success Plugin built`

My manifest.json (only thing I touched so far);

```json
{
  "compatibleVersion": 3,
  "bundleVersion": 1,
  "name": "Browser Preview",
  "description": "Quickly preview an artboard in your browser.",
  "author": "Lukas Oppermann",
  "icon": "icon.png",
  "commands": [
    {
      "name": "Preview Artboard",
      "identifier": "browser-preview",
      "script": "./my-command.js"
    },
    {
      "name": "Settings",
      "identifier": "browser-preview-settings",
      "script": "./my-command.js"
    }
  ],
  "menu": {
    "title": "🔍 Browser Preview",
    "items": [
      "browser-preview",
      "browser-preview-settings"
    ]
  }
}

```

Any idea? Can I somehow provide more information?