Fix SceneTransforms.wgs84ToWindowCoordinates for SCENE2D.
Add unit tests, fix scene.morphTo* to work with unit tests.
Fix a couple bugs in SceneTransforms.wgs84To*Coordinates that didn't properly check for undefined. Updated tests to use better positions in Columbus view.
Update CHANGES.md
Merge remote-tracking branch 'origin/master' into issue2028

Conflicts:
	CHANGES.md
Merge pull request #2032 from AnalyticalGraphicsInc/issue2028

Fix SceneTransforms.wgs84ToWindowCoordinates for SCENE2D.