sympy/sympy — pull request #1257 by rlamy (2012-04-21 19:42:13+00:00)
Title: Misc1

Miscellaneous changes paving the ground for #1162 - I split them off to make review easier.

The most important change is that no object tries to poke at the assumption dict any more. They now all let the (old) assumption system fully in charge, as the original design intended.