new test for FragmentUtils.makeAtomContainer()
test for FragmentUtils.traverse()
unit tests for MurckoFramgnter.getFrameworksAsContainers
unit test for MurckoFragmenter.getFragmentsAsContainers
replacing implementation with interface
corrected long broken unit test, the test was likely broken due to changes in the Fingerprinter… the new test does not depend on the output from Fingerprinter being preserved and isolates the test with bit sets. An additional method was added to perform the more intuitive differences both ways opposed to just the differences one way.