Echo JS 0.11.0

Thank you for your feedback.

The advantages are: 
- no tooling is required
- there is no configuration effort 
- and the initial loading time is short.

Disadvantage: 
- it uses blocking requests.

I'm planning a "diagnose-script" which produces a console output that lists the required polyfills. Grouped by "initial" and "delayed", so that you can preload them.

With regard to what the Polyfill can actually already do, I consider "quite" limited to be out of place.
And I think I know better what the factual limitations are.
With more effort, it is possible to pass almost all of the CSS-variables web platform tests.

Without even taking a close look at the polyfill, keep your criticism about the form of the post and not about the content.

Excuse me if my euphoria about the polyfill bothers you. Perhaps I'm posting too much about it.
But it is not right to express your dissatisfaction with the content of the post.
"quite limited": make or show me a better one.

Ups, sorry for localhost.
Correct is:
https://rawcdn.githack.com/nuxodin/ie11CustomProperties/6c465d21a8c043a45cba939995bb434966048377/demo.html