No subsequent version 4.0 in npm for `nglview-js-widgets`

[officiallygod]

Hi! It looks like nglview v4.0.1 has been released, but the corresponding nglview-js-widgets package has not been published to npm.

Currently, npm still serves the latest version as 3.1.5:

• https://www.npmjs.com/package/nglview-js-widgets

Could you please publish nglview-js-widgets@4.0.1 so that downstream projects can depend on the matching widget version?

Thanks!