put const_zeroed into the changelog

changelog.md

@@ -1,5 +1,10 @@
 # `bytemuck` changelog
 
+## 1.16.0 (UNRELEASED)
+
+* Adds a `const_zeroed` feature (MSRV 1.75) which puts a `zeroed` fn at the crate root.
+  This is just like the `Zeroable::zeroed` method, but as a `const fn`.
+
 ## 1.15.0
 
 This primarily relaxes the bounds on a `From` impl.

src/lib.rs

@@ -514,11 +514,10 @@ pub fn fill_zeroes<T: Zeroable>(slice: &mut [T]) {
   }
 }
 
-/// Initialize a zeroed `T`.
-///
-/// Like [`Zeroable::zeroed`], but supports const.
+/// Same as [`Zeroable::zeroed`], but as a `const fn` const.
 #[cfg(feature = "const_zeroed")]
 #[inline]
+#[must_use]
 pub const fn zeroed<T: Zeroable>() -> T {
   unsafe { core::mem::zeroed() }
 }