openlayers/ol3 — pull request #401 by twpayne (2013-03-19 21:28:03+00:00)
Title: Optionally extend ol.Coordinate to the third dimension

This PR makes `ol.Coordinate` optionally three dimensional.

Surprisingly, this is all that is required. With this, everything else continues to function (well, at least all the tests pass).

This is so that @mrmattf can continue his awesome work on Cesium / ol3 integration.