Use precomputed bounding sphere and horizon occlusion point.
Disable terrain latitude adjustment.
Merge remote-tracking branch 'origin/master' into gltf
Merge shaderpipeline to gltf
Update glTF picking
Merge branch 'shaderpipeline' into gltf
Merge branch 'master' into gltf
Merge remote-tracking branch 'origin/master' into gltf
Merge remote-tracking branch 'origin/master' into gltf
Merge remote-tracking branch 'origin/master' into meshTerrain

Conflicts:
	Apps/TerrainInspector/index.html
TerrainInspector improvements.
Merge remote-tracking branch 'origin/master' into gltf
Merge branch 'master' into gltf

Conflicts:
	Source/DynamicScene/CzmlDefaults.js
Fixes after merge.

CZML models should be working again.
Added breakpoint for failed loading
Merge origin/master to gltf
Runtime error for corrupt external references
Fixed JSHint warnings
Merge origin/master to gltf
Workaround glTF converter bug 121