When an atom gets deleted, all related torsions get deleted from
the entities TorsionImplMap. The ResidueHandles keep their own vector
of the same TorsionHandles. If an atom gets deleted, only the internal
torsion list of the corresponding residue got updated. This had to be
extended to all residues containing torsions related to the deleted
atom.

export them to Python

some typos

an entry page for the mm module

not only check for the number of bond partners, but also whether
there is an atom called SG in the bonded atoms.

of threads in the cpu platform

when it could be renamed in the meantime...

was just a copy paste artefact

can also read some CHARMM stuff