fix propogation of defaults in non-column table contructor (#398)

Author: palday

src/generalizedlinearmixedmodel.jl

@@ -227,9 +227,9 @@ GeneralizedLinearMixedModel(f::FormulaTerm, tbl,
                             contrasts = Dict{Symbol,Any}()) =
     GeneralizedLinearMixedModel(f, Tables.columntable(tbl),
                                 d, l;
-                                wts = [],
-                                offset = [],
-                                contrasts = Dict{Symbol,Any}())
+                                wts = wts,
+                                offset = offset,
+                                contrasts = contrasts)
 GeneralizedLinearMixedModel(f::FormulaTerm, tbl::Tables.ColumnTable,
                             d::Normal,
                             l::IdentityLink;