v0.3.0

You can now use single-spa Inspector to manage your local overrides! See the README for details on how this initial version looks and works.

Thanks to @filoxo for his work on enabling this feature.

Most errors that occur in the inspector will now be handled more gracefully, and a stacktrace will be shown. This hopefully enables anyone who runs into an error to be able to report it to us so we can fix it.