relax SVN archive

Modified the vectors() function to call the non-existant structural API bond_vectors() method.

Modified the vectors() function to handle the atom position being a list.

Modified the attached_atom() method to handle multiple models.

Some improvements to the vectors() function. It doesn't work yet though.

Modified the attached_atom() method and created the __find_bonded_atom() method.

The attached atom is now isolated correctly and returned.

A few small changes to the vectors() function.

Copyright notice update.

Changed the defaults of the sequence.display() user function so that everything is shown.

Fix for the sequence.display() user function intro printout.

Added the sequence.display() user function call to the angles system test.