Fixed a small bug for outputing events to an SBML file.  e.eventAssignments  was replaced with e.event_assignments because the event  class has no member eventAssignments.
Fixed a small bug for outputing events to an SBML file.  e.eventAssignments
 was replaced with e.event_assignments because the event
 class has no member eventAssignments.

GutenkunstLab/SloppyCell,GutenkunstLab/SloppyCell