restructure imports of qutip to avoid polluting the name space with other modules and their symbols
tidy up imports in steadystate module
tidy up export symbols from each qutip submodule
improved name spacing and bug fix in superoperator
fix syntax error
cleaned up symbol export/import for qutip.qip modules
fixed import and symbol errors
fix unit tests for more stringent module import/export
more unit test fixes
get rid of unsed _reset module
cleaned up code in unit tests so that it works with more stringent module management
avoid import *, fixed unit tests
only delete matplotlib from namespace when successfully imported
delete unnecessary symbol top_path
restructured imports
fix minor bugs and unit tests for qip.models.cqed
Merge branch 'cleanup-module-namespaces' of https://github.com/jrjohansson/qutip into cleanup-module-namespaces
fixed bugs in units tests
cleanup unit tests
fixed bugs and unit test class method names