0.21.0 is broken: missing codemirror-extension-mixin.js file

[tbroyer]

See https://github.com/tbroyer/blog.ltgt.net/actions/runs/18027532243/job/51297551493?pr=28

The index.js file references a codemirror-extension-mixin.js file that's not present in the package: https://www.npmjs.com/package/playground-elements/v/0.21.0?activeTab=code

[e111077]

Thanks for the issue. I wonder if this is an npmignore issue...

[e111077]

Fix is up in #430, will require a publish

[aomarks]

0.21.1 published with this fix

[tbroyer]

And I can confirm the fix: https://github.com/tbroyer/blog.ltgt.net/actions/runs/18047236862/job/51360830522?pr=28

Thanks