fix python -3 warnings when tests are run
armanpy supports both python2 and python3 now
fix absolute imports in core.common
run 2to3 on code and test with py27

run '2to3 -n future' on code
This code passes all tests run under py27
add arma::Col<long> typemaps
remove all scipy.weave code and move it to c++ sources

scipy.weave does not seem to be support python 3.
add py34 test environments
Merge branch 'py2to3'

Closes #4.