Add support for StructArray

Author: cpfiffer

src/structarray-connect.jl

@@ -0,0 +1,15 @@
+using StructArrays
+
+# A basic chains constructor that works with the Transition struct we defined.
+function bundle_samples(
+    rng::AbstractRNG, 
+    model::DensityModel, 
+    s::Metropolis, 
+    N::Integer, 
+    ts::Vector{T},
+    chain_type::Type{StructArray}; 
+    param_names=missing,
+    kwargs...
+) where {ModelType<:AbstractModel, T<:AbstractTransition}
+    return StructArray(bundle_samples(rng, model, s, N, ts, NamedTuple; param_names=param_names, kwargs...))
+end