Bug fixes:

- The Amber atom type of HD in N-terminal proline was wrong.

- Make CYM a known amino acid residue (useable in PDB files).

- Universe.randomPoint() returned points shifted by half the box size.

- When opening a PDB file in a PDB viewer fails under Windows, the
  error message given mentioned VRML instead of PDB.

Improvements:

- Hydrogen placement extended to more situations.

- Universe objects have a few new methods introduced for CDTK compatibility.