convert numpy arrays to lists in stripUnits
move after the unitstrip
Add an __all__ to openmm.py so that XXX_swigregister functions don't get imported
Merge pull request #40 from rmcgibbo/swigregister

Add an __all__ to openmm.py so that XXX_swigregister functions don't get imported into python namespace
one more change to the numpy code. last commit was bad
Merge pull request #39 from rmcgibbo/numpy-compatibility

Improve numpy compatability
Merge branch 'master' of https://github.com/SimTk/openmm