* updating package.py for py-celery, py-kombu, py-amq
* added more py-kombu package versions
* fix copyrights and stype on py-kombu/package.py
* removed extra spaces
* added py-billiard 4.2.0 and added back the license('BSD-3-Clause')
* removed extra spaces in py-celery/package.py
* fixed py-amqp 2.4.0 sha; fixed py-celery's dependency of py-click (when version restrictions)
* more clean up on specifying version bounds
9ff9ca61e6