In newer versions there is now a normal method for this which also supports
dynamically added components.

The static version is deprecated and removed in 2.0, so we need to port here.

This has proper support for rollup while providing the same API.

This is what open-wc recommends now and uses in their @open-wc/testing package

This prevents eslint from traversing the parent directories. In
the case there was a conflicting eslint config in a parent directory it would
error out otherwise (like is the case in our apps)

appending "#debug" to the URL enables it again. Not sure if this
the best mechanism, but better than spaming the console for now.

Dispatch dbp-set-property event to parent (if any) so that current element doesn't terminate event if it has the attribute set itself (#48)

Uses subscribe attribute