Fix #30 by importing numpy inside function
Revert "Fix #30 by importing numpy inside function"

This reverts commit db272d55e50c7a4c1617244ba8d5c40f4f6bf8cc.
See #30.
Explicitly require that numpy be installed first.

Resolves #30.
Document that JDK and Python bitness must match.

Resolves #32
Windows paths in setup
Merge branch 'master' of github.com:CellProfiler/python-javabridge