Require Julia 1.6

fredrikekre · fredrikekre · commit 5f679713c39b · 2022-06-29T08:51:40.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -11,4 +11,4 @@ SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
 RecipesBase = "0.6, 0.7, 0.8, 1.0"
-julia = "1.4"
+julia = "1.6"
