The step_trait_ext feature flag no longer exists, so remove it

Author: slightlyoutofphase

Cargo.toml

@@ -5,7 +5,7 @@ repository = "https://github.com/slightlyoutofphase/staticstep"
 documentation = "https://docs.rs/staticstep/"
 license = "MIT OR Apache-2.0"
 readme = "README.md"
-version = "0.2.1"
+version = "0.2.2"
 keywords = ["iterator", "iterators", "step", "range", "ranges"]
 categories = ["data-structures", "algorithms"]
 edition = "2018"

src/lib.rs

@@ -1,5 +1,5 @@
 #![no_std]
-#![feature(step_trait, step_trait_ext)]
+#![feature(step_trait)]
 
 use core::iter::Step;
 use core::ops::{