Including fragment complexity descriptor in qsar-molecular tests.
Setting descriptor class so the super call can run appropriate tests.
Returning an empty array instead of null, fixes test failure.
Correcting test assertion values, these values were changed in 851f899 but calculating by hand they are correct. It is likely the fragmenter was not working correctly in 851f899 and gave different frameworks.
Add the implicit hydrogen count to the explicit bond count value. This ensure the result is not different between implicit/explicit hydrogens and fixes the superclass test, testTakeIntoAccountImplicitHydrogens.