Check winding order of 3D points projected onto 2D plane instead of original 3D points.
Update CHANGES.md.
Merge branch 'master' into extrudedPolygon

Conflicts:
	CHANGES.md
Add test.
Merge branch 'master' into extrudedPolygon

Conflicts:
	CHANGES.md
Merge pull request #1528 from AnalyticalGraphicsInc/extrudedPolygon

Extruded polygon