Add default behavior of zero behavior and multiple crossings.  Small language fixes. Update format of event attribtues
Add default behavior of zero behavior and multiple crossings.  Small language fixes. Update format of event attribtues

gertingold/scipy,mdhaber/scipy,e-q/scipy,anntzer/scipy,zerothi/scipy,person142/scipy,scipy/scipy,perimosocordiae/scipy,aeklant/scipy,e-q/scipy,jor-/scipy,WarrenWeckesser/scipy,aeklant/scipy,ilayn/scipy,jor-/scipy,arokem/scipy,anntzer/scipy,Eric89GXL/scipy,vigna/scipy,scipy/scipy,jamestwebber/scipy,aarchiba/scipy,andyfaff/scipy,andyfaff/scipy,lhilt/scipy,endolith/scipy,matthew-brett/scipy,endolith/scipy,grlee77/scipy,aarchiba/scipy,endolith/scipy,Eric89GXL/scipy,zerothi/scipy,lhilt/scipy,grlee77/scipy,scipy/scipy,lhilt/scipy,perimosocordiae/scipy,andyfaff/scipy,mdhaber/scipy,tylerjereddy/scipy,zerothi/scipy,Stefan-Endres/scipy,jor-/scipy,jamestwebber/scipy,grlee77/scipy,ilayn/scipy,pizzathief/scipy,vigna/scipy,gertingold/scipy,e-q/scipy,perimosocordiae/scipy,tylerjereddy/scipy,anntzer/scipy,rgommers/scipy,vigna/scipy,arokem/scipy,nmayorov/scipy,lhilt/scipy,person142/scipy,rgommers/scipy,arokem/scipy,scipy/scipy,jor-/scipy,pizzathief/scipy,grlee77/scipy,Eric89GXL/scipy,aarchiba/scipy,lhilt/scipy,aeklant/scipy,Eric89GXL/scipy,zerothi/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,ilayn/scipy,WarrenWeckesser/scipy,zerothi/scipy,nmayorov/scipy,pizzathief/scipy,anntzer/scipy,tylerjereddy/scipy,vigna/scipy,ilayn/scipy,gertingold/scipy,rgommers/scipy,perimosocordiae/scipy,rgommers/scipy,perimosocordiae/scipy,e-q/scipy,zerothi/scipy,WarrenWeckesser/scipy,endolith/scipy,WarrenWeckesser/scipy,arokem/scipy,WarrenWeckesser/scipy,nmayorov/scipy,aeklant/scipy,andyfaff/scipy,grlee77/scipy,matthew-brett/scipy,person142/scipy,ilayn/scipy,jor-/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,matthew-brett/scipy,vigna/scipy,Stefan-Endres/scipy,person142/scipy,mdhaber/scipy,Stefan-Endres/scipy,ilayn/scipy,andyfaff/scipy,scipy/scipy,nmayorov/scipy,Stefan-Endres/scipy,aarchiba/scipy,person142/scipy,Eric89GXL/scipy,Eric89GXL/scipy,e-q/scipy,tylerjereddy/scipy,endolith/scipy,matthew-brett/scipy,aarchiba/scipy,pizzathief/scipy,aeklant/scipy,gertingold/scipy,mdhaber/scipy,jamestwebber/scipy,matthew-brett/scipy,mdhaber/scipy,gertingold/scipy,andyfaff/scipy,pizzathief/scipy,mdhaber/scipy,jamestwebber/scipy,endolith/scipy,arokem/scipy,rgommers/scipy,anntzer/scipy,anntzer/scipy,jamestwebber/scipy,nmayorov/scipy,WarrenWeckesser/scipy,scipy/scipy