added conditional scheduling
improving langugae and syntax
adding format as an entity
changing collection model
improving ingest event
improving ingest event
adding activites to the simulation engine
adding migration event and updating simulation engine with events that can run more than one cycle
adding migration event
updating calculation fo properties
 addapting event to use new scheduling format
updating graph view
improving the graph interface
small improvements
improving migration event
updating travis , now only simulation engine is tested
removing temp file
resolving travis conflict