bump to num-traits 0.2.1

Author: cuviper

Cargo.toml

@@ -29,7 +29,7 @@ version = "0.1.36"
 default-features = false
 
 [dependencies.num-traits]
-version = "0.2.0"
+version = "0.2.1"
 default-features = false
 features = ["std"]