AnalyticalGraphicsInc/cesium — pull request #237 by mramato (2012-09-13 15:10:48+00:00)
Title: Fix CZML availability computation.

Niether `DynamicObjectCollection.computeAvailability` nor `CompositeDynamicObjectCollection.computeAvailability` properly accounted for intervals where only one end was the minimum or maximum IS08601 date.