LaTeX fix in documentation of jordan_cells
Fix documentation
polys: change docstirings to be 'raw' strings in modulargcd
polys: rewrite _swap function in modulargcd

No more conversions to dense representation are used for this function.
Correct a few tests.
polys: some minor changes in modulargcd

In modgcd_multivariate: 
The computation of the bounds is now faster and more readable.

In _modgcd_multivariate_p:
Checking if the result of the recursive call is a constant
is now done with `ha.is_ground` instead of `ha.LM == zero`.
polys: choose evaluation points at random in _modgcd_multivariate_p

and add a test for this
Merge pull request #2276 from asmeurer/matrix_hash

Make mutable matrices not hashable (issue 880)
Merge pull request #2256 from sympy/0.7.3

0.7.3
Merge pull request #2268 from jrioux/order

Order term handling, Order at infinity, limits with Order
Merge pull request #2252 from mrocklin/matadd-sort-key

matadd uses default sort key
Travis: make sure numpy is installed before mpl
Address review comments
Merge pull request #2284 from certik/mpl

Travis: test against matplotlib
:math: is changed to .. math ::
Merge pull request #1867 from mgill25/master

Raise TypeError instead of looping forever
Add Manish Gill to the AUTHORS/aboutus. Welcome to SymPy!
Few modification of ntheory
Remove unnecessary ()
polys: rewrite _gf_gcd function in modulargcd

No more conversions to dense representation are used for this function.