Multiple changes:

The worker can now be auto-bundled via rollup and no longer has to be passed manually.
This is handled via a js script file which builds a blob containing bundled code.
This requires some CSP exceptions in the target applications, so mention that in the README.

scanImage() now takes an option object and defaults to returning more information, so
handle both changes (returnDetailedScanResult now defaults to true)

Component users can now drop their worker copying code and need to adjust their CSP.

1.4 and newer no longer detect any QR codes for some reason.
Needs to be investigated why..

the scoped mixin no longer depends on it directly

And adjust for the import changes

It has new API which we want to use.

This makes it use those packages from npm instead of locally, not
sure why this was added.

Newest Ubuntu switched Firefox to a snap, which breaks karma.

Try to use playwright to download and cache firefox/chromium
and use those for karma.

Compared to puppeteer where we did this some time ago this caches
the browsers globally, and only downloads them when we start the tests.