Updated CHANGELOG.md

CHANGELOG.md

@@ -2,21 +2,22 @@
 
 All notable changes to this project will be documented in this file.
 
-## [2.1] - Unreleased
+## [2.1] - 2022-12-21
 
 - New classes to compute the 3-point fermion-boson susceptibilities,
   `ThreePointSusceptibility`, `ThreePointSusceptibilityPart` and
   `ThreePointSusceptibilityContainer`.
 - `QuadraticOperator` can now be a product of two creators or two annihilators.
 - Renamed type aliases `FreqTuple` -> `FreqTuple3` and `FreqVec` -> `FreqVec3`.
   The old names are still usable but marked as deprecated.
-- Bump required CMake version to 3.11.0.
-- Bump required libcommute version to 0.7.2.
+- Bumped required CMake version to 3.11.0.
+- Bumped required libcommute version to 0.7.2.
 - Use CMake's module `FetchContent` to fetch libcommute if it is not found
   locally.
 - Install CMake configuration files into
   ``${CMAKE_INSTALL_PREFIX}/lib/cmake/pomerol``, which is the recommended
   location.
+- New GitHub Actions workflow that builds and installs pomerol on macOS 11.
 
 ## [2.0] - 2021-11-30