[release 3.2] Changelog file additions.

CHANGELOG.md

@@ -4,6 +4,36 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## 3.2 - 2018-02-?
 ### Added
-- Migrated `libsleef` and `libsleefgnuabi` to `cmake` build system.
+- The whole build system of the project migrated from makefiles to
+  cmake. In particualr this includes `libsleef`, `libsleefgnuabi`,
+  `libdft` and all the tests.
+- Benchmarks that compare `libsleef` vs `SVML` on X86 Linux are
+  available in the project tree. @shibatch please add the path here
+  once https://github.com/shibatch/sleef/pull/168 is in.
+- Extensive upstream testing via Travis CI and Appveyor, on the
+  following systems:
+  * OS: Windows / Linux/ OSX.
+  * Compilers: gcc / clang / MSVC.
+  * Targets: X86 (SSE/AVX/AVX2/AVX512F), AArch64 (Advanced SIMD), ARM
+    (NEON). Emulators like QEMU or SDE can be used to run the tests.
+- Added the following new vector functions (with relative testing):
+  * `log2`
+  * ... @shibatch , any other function I am missing?
+- New compatibility tests have been added to check that
+  `libsleefgnuabi` exports the GNUABI symbols correctly.
+- The library can be compiled to an LLVM bitcode object. @xoofx,
+  do you have anything more to say here?
+- Added masked interface to the library to support AVX512F masked
+  vectorization.
+
+### Changed
+- Use native instructions if available for `sqrt`.
+- Fixed fmax and fmin behavior on AArch64:
+  https://github.com/shibatch/sleef/pull/140
+- Speed improvements for `asin`, `acos`, `fmod` and `log`.
+- Removed `libm` dependency.
+
+### Removed
+- Makefile build system