Use a single file for migration + release notes (#324)

* Use a single file for migration + release notes

* Remove hardcoded distro

* Add another note

(cherry picked from commit 698e41f)

# Conflicts:
#	doc/migration/migration.rst
#	doc/release_notes/release_notes.rst

doc/migration/migration.rst

@@ -14,17 +14,26 @@ Coming from ros_control (ROS 1)
 Between different ROS 2 distributions
 **************************************
 
+<<<<<<< HEAD
+=======
+This list summarizes necessary changes to your code for a version update to {DISTRO}. If you are skipping a distribution update, make sure to read the migration guides of all intermediate distributions.
+
+For non-breaking updates, see the :ref:`release_notes`.
+>>>>>>> 698e41f (Use a single file for migration + release notes (#324))
 
-ros2_control
--------------
 
 .. toctree::
    :titlesonly:
 
+<<<<<<< HEAD
    Foxy to Galactic <../ros2_control/doc/migration/Galactic.rst>
 
 
 ros2_controllers
 ----------------
 
 There are no migration notes yet.
+=======
+   ros2_control <../ros2_control/doc/migration.rst>
+   ros2_controllers <../ros2_controllers/doc/migration.rst>
+>>>>>>> 698e41f (Use a single file for migration + release notes (#324))

doc/release_notes/release_notes.rst

@@ -0,0 +1,17 @@
+.. _release_notes:
+
+Release Notes
+=================================
+
+This page should highlight the most important changes of the ros2_control framework in the {DISTRO} release. If you are skipping a distribution update, make sure to read the release notes of all intermediate distributions.
+
+These lists might not be complete, see the ``CHANGELOG.rst`` files in the respective repositories for a full list of changes.
+
+For necessary changes to your code for a version update, see the :ref:`migration`.
+
+
+.. toctree::
+   :titlesonly:
+
+   ros2_control <../ros2_control/doc/release_notes.rst>
+   ros2_controllers <../ros2_controllers/doc/release_notes.rst>