Calulate all torsion angles and assign secondary structure and mesostate code.
This module uses much of the code from the original BIOMOL collection of
utilities written by Raj Srinivasani with enhancements by Nick Fitzkee.
The script was put together by Pat Fleming so that a user would not need
to have the BIOMOL distribution installed to run PROSS.
Note that since Raj's time the definitions of mesostates has been superceded
by the fine grained 30 deg x 30 deg grid for most purposes. Either mesostate(more...)