Document release process (#32)

Signed-off-by: Christophe Bedard <christophe.bedard@apex.ai>

DEVELOPING.md

@@ -0,0 +1,18 @@
+# Developing colcon-lcov-result
+
+## Developing
+
+See [*Contributing* in the README](./README.rst#contributing).
+
+## Releasing
+
+1. Bump `__version__` in [`colcon_lcov_result/__init__.py`](./colcon_lcov_result/__init__.py)
+1. Create commit with the new version number as the commit message
+1. Tag that commit with the new version number
+1. Push commit and tag
+1. Package and publish using [dirk-thomas/publish-python](https://github.com/dirk-thomas/publish-python) (see instructions) to:
+    * PyPI: https://pypi.org/project/colcon-lcov-result/
+    * packagecloud: https://packagecloud.io/app/dirk-thomas/colcon/search?q=python3-colcon-lcov-result
+1. Open a PR to bump version in [ros-infrastructure/reprepro-updater](https://github.com/ros-infrastructure/reprepro-updater) config files so that the ROS apt repos import packages from packagecloud
+    * For Debian: https://github.com/ros-infrastructure/reprepro-updater/blob/master/config/colcon.debian.upstream.yaml
+    * For Ubuntu: https://github.com/ros-infrastructure/reprepro-updater/blob/master/config/colcon.ubuntu.upstream.yaml

README.rst

@@ -161,3 +161,8 @@ Known Issues
 
 #. The final step of aggregating all the result files can be slow depending
    on the number of packages that were analyzed
+
+Developing
+==========
+
+See `DEVELOPING.md <DEVELOPING.md>`_.