TransformationSet -> ImageSet, transform -> image
TransformationSet -> ImageSet in printing/docs
deprecate TransformationSet
add fields to deprecated flag on TransformationSet
Change feature keyword in TransformationSet deprecation
add imageset
imageset of Intervals that cross 0
fix import in test_fancysets
add import to imageset docstring
Allow passing of kwargs to theano.function.
Made python2.6 compatible.
Implement __contains__ for SingleFiniteDistribution.

Fixes issue 3964: Test failure in master: __contains__ deprecated in test_finite_rv.py
https://code.google.com/p/sympy/issues/detail?id=3964
Properly reset warning filters in tests.

Fixes issue 2492: Better way to test warnings
https://code.google.com/p/sympy/issues/detail?id=2492
Increment stacklevel when wrapping warnings.warn().
Print enhanced asserts' lhs and rhs each on its own line.
Add missing __future__ import print_function.
_image -> _eval_imageset
add dtypes to tests
reword keyword arg handling in theano_function
add test ensuring theano_function fails on bad input