sympy/sympy — pull request #1500 by asmeurer (2012-08-19 20:21:05+00:00)
Title: Deprecation

This implements some of the suggestions for improving the deprecation warnings from the [mailing list](https://groups.google.com/d/topic/sympy/krejWqUErdQ/discussion). Note that this is not finished yet (I still need to modify the existing warnings to use these new flags).