From c7e7d4895e480500ba2285e8b2cf64dfabe5a353 Mon Sep 17 00:00:00 2001
From: Norbert Nemec <Norbert@Nemec-online.de>
Date: Tue, 3 Sep 2019 19:33:44 +0200
Subject: [PATCH] add README and CHANGELOG entries

---
 CHANGELOG.md | 7 +++++++
 README.md    | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee86bd8..cf67592 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Changed
+
+ - Refactored dependencies of experimental "specialization" feature into
+   default_fn! macro to reduce code duplication and complexity. Currently
+   only needed for non-functional SIMD feature.
+ - Refactored SIMD code into separate source files. See README.md for details.
+
 ### Added
 
  - Add `VectorN::zip` and `PointN::zip`
diff --git a/README.md b/README.md
index a87d8ad..2b7ef92 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,13 @@ and `v.zy()` produces a
 ```rust
 Vector2 { x: 3.0, y: 2.0 }
 ```
+### SIMD optimizations
+
+The current SIMD support depends on the deprecated "simd" package as well
+as the unstable "specialization" feature. To build this code, a pre-1.33 nightly
+build of Rust is required, e.g. 2019-01-01-nightly. Though the code is not
+useful in its present form, it has some worth preserving as starting point
+for a future migration (see https://github.com/rustgd/cgmath/issues/490).
 
 ## Limitations