Add a couple of issue references

Author: mhauru

src/mcmc/gibbs.jl

@@ -571,6 +571,7 @@ function match_linking!!(varinfo_local, prev_state_local, model)
     # variables. The below is how I would like to implement this, but DynamicPPL at this
     # time does not support linking individual variables selected by `VarName`. It soon
     # should though, so come back to this.
+    # Issue ref: https://github.com/TuringLang/Turing.jl/issues/2401
     # prev_links_dict = Dict(vn => DynamicPPL.istrans(prev_varinfo_local, vn) for vn in keys(prev_varinfo_local))
     # any_linked = any(values(prev_links_dict))
     # for vn in keys(varinfo_local)

test/mcmc/gibbs.jl

@@ -463,6 +463,7 @@ end
         # TODO(mhauru) Could we do something smarter here? Maybe a dynamic model for which
         # the posterior is analytically known? Doing 10_000 samples to run the test suite
         # is not ideal
+        # Issue ref: https://github.com/TuringLang/Turing.jl/issues/2402
         @test isapprox(mean(num_ms), 8.6087; atol=0.5)
         @test isapprox(std(num_ms), 1.8865; atol=0.02)
     end