has-0.4: Entity based records Contents Index

& Data.Has .> Data.Has :&: Data.Has ::: Data.Has :> Data.Has Contains Data.Has Field Data.Has field Data.Has FieldOf Data.Has fieldOf Data.Has Has Data.Has injl Data.Has Knows Data.Has Labelled Data.Has prjl Data.Has TyNil Data.Has TypeOf Data.Has updl Data.Has ^. Data.Has ^: Data.Has ^= Data.Has