massive documentation improvement to core
massive documentation improvement to core

LoLab-VU/pysb,alubbock/pysb-legacy,alubbock/pysb,spgarbet/pysb,d-fan/pysb,neurord/pysb,d-fan/pysb,spgarbet/pysb,neurord/pysb,alubbock/pysb-legacy,jmuhlich/pysb,johnbachman/pysb,LoLab-VU/pysb,alubbock/pysb-legacy,neurord/pysb,spgarbet/pysb,d-fan/pysb,alubbock/pysb-legacy,johnbachman/pysb,pysb/pysb