The subset of click that is actually used matches what the standard
argparse module provides. Not depending on click simplifies the
packaging of adareducer.
TN: V317-010
For the benefit of the development environment, or any
users who only "git clone" this repository and work from it.
Fix the testsuite using this.
Rename the "adareducer" source dir to "ada_reducer"
This commit adds a setup.py script so that, providing libadalang is
available, installing adareducer is a one-liner. To achieve this, it
also renames the top-level package (src -> adareducer) and the script
(adareducer.py -> ada_reduce.py) to avoid name conflicts.
