Adjust timespan check to permit a timeline with only one event or all events at the same instant. Continue to reject cases where the Timescale is created with events that are not otherwise in time order. #165
Adjust timespan check to permit a timeline with only one event or all events at the same instant. Continue to reject cases where the Timescale is created with events that are not otherwise in time order. #165

LauraHilliger/TimelineJS,ColbyWanShinobi/TimelineJS3,tkandala/TimelineJS3,Ichag/TimelineJS3,NUKnightLab/TimelineJS3,4talesa/TimelineJS3,yiakwy/TimelineJS3,acdha/TimelineJS3,stepaola/TimelineJS3,thelinuxlich/TimelineJS3,LauraHilliger/TimelineJS,thelinuxlich/TimelineJS3,wangjun/TimelineJS3,NUKnightLab/TimelineJS3,acdha/TimelineJS3,tkandala/TimelineJS3,ColbyWanShinobi/TimelineJS3,yiakwy/TimelineJS3,LauraHilliger/TimelineJS,yiakwy/TimelineJS3,Ichag/TimelineJS3,stepaola/TimelineJS3,kidaa/TimelineJS3,ColbyWanShinobi/TimelineJS3,tkandala/TimelineJS3,kidaa/TimelineJS3,4talesa/TimelineJS3,wangjun/TimelineJS3,NUKnightLab/TimelineJS3,wangjun/TimelineJS3,4talesa/TimelineJS3,stepaola/TimelineJS3,kidaa/TimelineJS3,acdha/TimelineJS3,Ichag/TimelineJS3,thelinuxlich/TimelineJS3