comitting real change

Author: racinmat

test/tst_mutagenesis.jl

@@ -15,7 +15,7 @@ end
     @test !any(haskey.(test_x, :mutagenic))
     @test !any(haskey.(val_x, :mutagenic))
     # test data is materialized
-    @test train_x isa AbstractVector{<:AbstractDict}
-    @test test_x isa AbstractVector{<:AbstractDict}
-    @test val_x isa AbstractVector{<:AbstractDict}
+    @test train_x isa Vector{<:Dict}
+    @test test_x isa Vector{<:Dict}
+    @test val_x isa Vector{<:Dict}
 end