Update to autocfg 1

cuviper · cuviper · commit 131f873f2835 · 2020-01-09T13:48:45.000-08:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -26,4 +26,4 @@ i128 = ["num-traits/i128"]
 std = ["num-traits/std"]
 
 [build-dependencies]
-autocfg = "0.1.3"
+autocfg = "1"
