Excluded vector/__init__.py from wildcard import checks.
Fixed printing issues in doctests.
Updated printing functions api docs.
u'' to u('')/
Cleaned up pretty printing for Vector and Dyadic

More consistent spacing, better sized operators, and proper parenthesis
wrapping.
init_printing > init_vprinting, moved m* print functions into correct module.
Adjusted pretty_print reg tests for new output.
init_printing > init_vprinting
Import print functions in functions.py.
Wrapped warning message.
Simpler command for latex printer choice.
Fixed Python 2.6 string format error.
use warnings and other review edits
Merge pull request #2784 from asmeurer/mpmath-0.18

Update mpmath to 0.18
Change version to 0.7.5.rc1
Change version to 0.7.5-git
add evaluate context manager
Extend use of global_evaluate
Add cacheit decorator back onto AssocOp.__new__
cacheit inspects global variables