sympy/sympy — pull request #2862 by moorepants (2014-02-01 22:45:31+00:00)
Title: Fixed bugs introducd by merging PR #2732.

Printing of vectors and dyadics were broken when PR #2732 was merged due to
some missing imports. There were no tests for this, so I've added a couple for
pretty printing. I have some tests for latex printing in PR #2772 that has not
been merged yet.