Upgrading Shelley

Keep Shelley up to date

Since Shelley is running on your VM, you're running the version that
existed when you created your VM. There are two ways to update:

1. **From the Shelley menu:** Click the `⋮` menu in the top-right corner
   of the Shelley UI and select **Check for New Version**.
2. **From the exe.dev shell:** Run `shelley install <vm>`.