IssueTracker

We need new API for getting the bounds for a Morph object, to make it easier to figure out how to size and place it. We cannot (currently) get the shapes inside of it, so it's difficult to easily calculate the bounds.

Also, we want to make it easier to call Shapes functions from Compose, using Compose types such as Matrix and Path (the non-platform forms of those APIs). Ideally, these functions will live in Compose itself, but in the meantime we can prototype what we need in the testapp-compose integration test (the Compose.kt file specifically).