* Get rid of old requirements files, unused script and replace simplejson with json everywhere.

* Add new requirements.in files

* Generate full requirements files and update references to them.

* Fix missing dependencies that were breaking tests.

* Add missing uwsgi dependency.

* Include test.in in local.in

* Update agent requirements files.

* Move requests requirement to base.in in client

* Reformat client files with black.

* Fix missing dependencies.

* Re-add client tests to CI.

* Compile py2 requirements with python2

* Fix other references to client requirements.

* Fix flake8-black check for main balrog app.

* Add pyproject.toml everywhere and fix a black failure.

* Improve setup.py requirements parsing a bit more; fix up repoze.lru package name.

* Add clarifying comments to requirements file.

* Add MANIFEST.in to balrogclient dockerfile.