Add back rotate when space is clicked. Add look when close to the ground and the sky is clicked.
Change look to use the geodesic normal to rotate about. Keep track of looking, panning, or rotating.
Re-add rotate in 3d tests (for mousing over space).
Stay in whatever mode the camera is in until the mouse is released.
Merge branch 'master' into camera-rotate-look
Make tilt mouse button also look when clicking the sky.
Add looking when clicking the sky to translate and tilt mouse buttons in Columbus View.
Use abs when checking against epsilon value for plane/terrain intersection.
Make the geodesic normal a constrained axis for interaction with the sky.
Fix bad doc links.
Merge pull request #1980 from AnalyticalGraphicsInc/issue1976

Fix bad doc links on Matrix classes.
Update CHANGES.md.
Merge pull request #1954 from AnalyticalGraphicsInc/camera-rotate-look

Camera space/sky interaction
Make Primitive.modelMatrix only take affect in 3D with just one instance.
Add primitive model matrix tests.
Update CHANGES.md.
Merge pull request #1981 from AnalyticalGraphicsInc/primitive-modelMatrix

Primitive.modelMatrix
Merge remote-tracking branch 'origin/master' into webGL-globe-json