Update changelog.

Author: ionelmc

AUTHORS.rst

@@ -46,3 +46,5 @@ Authors
 * Pamela McA'Nulty - https://github.com/PamelaM
 * Christian Riedel - https://github.com/Cielquan
 * Chris Sreesangkom - https://github.com/csreesan
+* Sorin Sbarnea - https://github.com/ssbarnea
+* Brian Rutledge - https://github.com/bhrutledge

CHANGELOG.rst

@@ -1,6 +1,14 @@
 Changelog
 =========
 
+2.12.1 (2021-06-01)
+-------------------
+
+* Changed the `toml` requirement to be always be directly required (instead of being required through a coverage extra).
+  This fixes issues with pip-compile (`pip-tools#1300 <https://github.com/jazzband/pip-tools/issues/1300>`_).
+  Contributed by Sorin Sbarnea in `#472 <https://github.com/pytest-dev/pytest-cov/pull/472>`_.
+* Documented ``show_contexts``.
+  Contributed by Brian Rutledge in `#473 <https://github.com/pytest-dev/pytest-cov/pull/473>`_.
 
 2.12.0 (2021-05-14)
 -------------------