Release v4.254.0

Added

• Hosts can compile the executable subset of a model with CompileAdmissible: slices, specifications, imports and policies that executable binding refuses are excluded and reported with their original diagnostics, while declarations whose security depends on an excluded or unresolved declaration are excluded too or fail the compilation, never silently widened (#1091)
• Hosts can register a provider that evaluates named validation rule bodies, so specifications with opaque rules no longer have to stop at Unsupported (#1092)
• Scoped projections in the reference executor can map $eventContext.occurred into read-model properties of from, every and children blocks, using each event's own occurrence time in UTC; a projection that needs an occurrence time an event does not carry now fails instead of publishing partial state (#1087)
• Imperative validate on concepts and properties can now load its body from a file with validate file <path> (#1093)