CompatHelper: add new compat entry for Statistics at version 1, (keep…

… existing compat)

Project.toml

@@ -1,7 +1,7 @@
 name = "MixedModelsSim"
 uuid = "d5ae56c5-23ca-4a1f-b505-9fc4796fc1fe"
 authors = ["Phillip Alday", "Douglas Bates", "Lisa DeBruine", "Reinhold Kliegl"]
-version = "0.2.7"
+version = "0.2.8"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -16,5 +16,6 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 MixedModels = "4"
 PooledArrays = "0.5, 1"
 PrettyTables = "0.11, 0.12, 1, 2"
+Statistics = "1"
 Tables = "1.0"
 julia = "1.3"