Darken Pt color for depiction, as suggested by PR#924.
Merge branch 'master' of github.com:openbabel/openbabel
Merge branch 'master' of github.com:openbabel/openbabel
Patch from Torsten Sachse to re-enable minimizing rmsd and minenergy.

Conformer searches that perform a geometry optimization before
calculating the energy or RMSD to eliminate minor clashes.
Make sure all SDF templates are installed for use with 2D layout.

Also add a DABCO template.