Specify latest frontend version for jlab, embedding & voila

[SylvainCorlay]

This was causing the older version to be loaded, and 1.2.0 is not available on npmjs.

cf https://github.com/QuantStack/voila/issues/11

[mwcraig]

@SylvainCorlay -- just to make sure I understand, the extension spec version needs to be the same as the npm version? My understanding had been that the extension spec version was essentially internal.

[SylvainCorlay]

@SylvainCorlay -- just to make sure I understand, the extension spec version needs to be the same as the npm version?

My understanding had been that the extension spec version was essentially internal.

Hey, yes it needs to be the same, or more generally to be a semver range that includes the actual npm version. Typically ^VERSION.

This is used in two ways:

• in the context of Jupyter, the front-end package is validated against that range.
• in the context of the embedding with the html manager and voila, it is the semver that is used to fetch the bundle from the unpkg CDN.

It is generally not used in the case of the classic notebook.

[mwcraig]

OK, in that case I'll increment the version in all the places and do a new release. Thanks for the explanation, additional commits incoming to your PR in a few minutes...

[mwcraig]

Thanks, @SylvainCorlay!