Release v4.122.0

Added

• Stage now accepts Screenplay models compiled to executable model version 23 (Screenplay 4.182.0) wherever an equivalent earlier model was accepted. (part of #316)

Changed

• A model that describes a command handler without supplying its implementation is now refused with STAGE-IMPL-002 by the renderer, the specification runner and the host, instead of being rendered or run without the handler. (part of #316)
• A model that declares atomic reaction batches (reaction batches atomic) is now refused with STAGE-ESM-043 on every path until Stage supports them. (part of #316)