Incomplete, untested: Making the top level concurrent. Refactored the rest of the implementation to use outbox-passing style. We still need to update the demo code.
Incomplete, untested: Making the top level concurrent. Refactored the rest of the implementation to use outbox-passing style. We still need to update the demo code.

rocketnia/era-cene,era-platform/cene,rocketnia/era-cene,era-platform/cene,era-platform/cene,rocketnia/era-cene