setup.py: Include CHANGELOG.rst in sdist
Make python setup.py sdist include CHANGELOG.rst in the tar.gz. Without it, installing from the released tar.gz will fail because setup.py expects to read CHANGELOG.rst to generate the long description.
Make python setup.py sdist include CHANGELOG.rst in the tar.gz. Without it, installing from the released tar.gz will fail because setup.py expects to read CHANGELOG.rst to generate the long description.