Use rollup for dist files - create index.umd.min.js to be used directly in the browser

[chregu]

And autodeploy on tags.

Demo for including it here: https://jsfiddle.net/chregu/m9hcvrqt/

[mweibel]

the compile npm script uses babel still. Shouldn't we switch all to rollup if we use it anyway?

[chregu]

Maybe. Just didn't want to break something. But I can have a look.

[chregu]

So, it now does an ESM and CJS file with rollup as well. Seems to work in my setup, but not totally sure it's the right way

[mweibel]

looks good to me, without having it checked personally. Shall I merge?

[chregu]

let's merge and see what happens ;)