fixup SemEnsemble: include order

Author: Alexey Stukalov

src/StructuralEquationModels.jl

@@ -54,9 +54,6 @@ include("observed/covariance.jl")
 include("observed/missing_pattern.jl")
 include("observed/missing.jl")
 include("observed/EM.jl")
-# constructor
-include("frontend/specification/Sem.jl")
-include("frontend/specification/documentation.jl")
 # implied
 include("implied/abstract.jl")
 include("implied/RAM/symbolic.jl")
@@ -69,6 +66,9 @@ include("loss/ML/FIML.jl")
 include("loss/regularization/ridge.jl")
 include("loss/WLS/WLS.jl")
 include("loss/constant/constant.jl")
+# constructor
+include("frontend/specification/Sem.jl")
+include("frontend/specification/documentation.jl")
 # optimizer
 include("optimizer/abstract.jl")
 include("optimizer/Empty.jl")