Make Julia 1.6 the oldest supported version

davidanthoff · davidanthoff · commit 78a9d0bcea4f · 2023-07-15T12:26:05.000-07:00
diff --git a/Project.toml b/Project.toml
@@ -16,4 +16,4 @@ test = ["Test"]
 [compat]
 DataValues = "0.4.4"
 PyCall = "1.90"
-julia = "1"
+julia = "1.6"
