[Python-ideas] Extend the warnings module with Deprecation utility methods and classes

[Joshua Harlow]

If you want, feel free to take some of the code from:

https://docs.openstack.org/debtcollector/latest/reference/index.html

It was made for a similar purpose (and uses warnings module at its 
lowest level) and may offer some things that could be in this new 
warnings module.

Code is at:

https://git.openstack.org/cgit/openstack/debtcollector

And mirrored at https://github.com/openstack/debtcollector

-Josh