close #16569: deprecated reversed(a, start, last) overload, use toOpenArray instead (#18047)

* close #16569: deprecated reversed overload, use toOpenArray instead

* [skip ci] change wording in changelog per review

* fixup

changelog.md

@@ -75,6 +75,8 @@
 
 - `strformat` is now part of `include std/prelude`.
 
+- Deprecated `proc reversed*[T](a: openArray[T], first: Natural, last: int): seq[T]` in `std/algorithm`.
+
 - The configuration subsystem now allows for `-d:release` and `-d:danger` to work as expected.
   The downside is that these defines now have custom logic that doesn't apply for
   other defines.