cdk

Also include the dependencies of the smiles module

With the fix, the number of tries needed to get the expected accuracy is much less

Improved random number generation in a range.

[PATCH] Wrote missing test: Tanimoto on IBitfingerprints

Removed a bad tests: the matcher uses and requires implicit hydrogens explicitly, and the test does not have them; the testFindMatchingAtomType_IAtomContainer_IAtom() does and works find