Now way to provide manifest when using `JsonEncoder`

[kungfoo]

I would love to combine the power of storing data as json or jsonb and providing a custom manifest that is not the class name (because that is likely to change.
Currently I cannot wrap my head around how to do that, since once I enable my JsonEncoder to be used, I can no longer provide a manifest.
I would like to include the the version of the event either in the manifest or, potentially even better in the tags as ('version', '1.0').

[kungfoo]

Previously I simply appended the version as a number to the manifest, like so:
Manifest type name:

manifest(ProductOrdered) = "sample.ProductOrdered-${version}"

This allows me to register adapters for upgrading old events to new versions.

[kungfoo]

Okay, I read the code and while I think it would still be nice to support this version via the manifest, there is also another way I could come up with to support versioning and adapters for versions:

package sample.product.events.v1

case class ProductOrdered extends Versioned("v1") (....)

And then using that version once I need to write an adapter from an old version to the new version. The type will have to remain in place for deserialization to work, but that's probably not even bad, because it is very explicit.