fixed some of the relative imports and also one of the circular ones
I Think I solved the division problem
minor fix in solving the python3 division problem
minor fixed __hash__ for expression for python3
py3 imports
Small changes
truediv stuff
non-integer row/colss
assertItemsEqual
fix truediv and rtruediv
fix truediv and rtruediv
wording
unnecessary
fix the 'memory error'
more idiomatic unit test
isinstance(np.zeros(1,dtype=int)[0], numbers.Number) is False on linx64
Merge pull request #150 from rmcgibbo/py3

Python3 support
working on passing tests with python3
testing python3 now
almost works in py3, works in py2