Fix VarName deprecations (#300)

Fixes some deprecations.

Author: devmotion

Project.toml

@@ -1,6 +1,6 @@
 name = "DynamicPPL"
 uuid = "366bfd00-2699-11ea-058f-f148b4cae6d8"
-version = "0.13.1"
+version = "0.13.2"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"

src/distribution_wrappers.jl

@@ -11,7 +11,7 @@ struct NamedDist{variate,support,Td<:Distribution{variate,support},Tv<:VarName}
     name::Tv
 end
 
-NamedDist(dist::Distribution, name::Symbol) = NamedDist(dist, VarName(name))
+NamedDist(dist::Distribution, name::Symbol) = NamedDist(dist, VarName{name}())
 
 struct NoDist{variate,support,Td<:Distribution{variate,support}} <:
        Distribution{variate,support}

test/turing/varinfo.jl

@@ -187,7 +187,7 @@
         i, j, k = 1, 2, 3
 
         vn1 = @varname x[1]
-        @test vn1 == VarName(:x, ((1,),))
+        @test vn1 == VarName{:x}(((1,),))
 
         # Symbol
         v_sym = string(:x)