Added functionality that makes easier to work with rigid bonds and angles plus few minor fixes and name refactors
Added functionality that makes easier to work with rigid bonds and angles plus few minor fixes and name refactors

mefortunato/pysimm,mefortunato/pysimm,polysimtools/pysimm,polysimtools/pysimm,plin1112/pysimm,plin1112/pysimm