mark files for change
Merge branch 'master' into getSetPropertiesPrimitives
Billboard, Credit, ImageryLayer, Label, Polygon, Polyline
update sandcastle
cleanup, update CHANGES.md
Fix show property for dynamic ellipsoids.
remove prototype functions from AxisAlignedBoundingBox, BoundingRectangle, BoundingSphere, Plane, Ray and Spherical.
cleanup, update CHANGES.md
Billboard doc fixes
BillboardCollection doc fixes
ImageryLayer doc improvements
Label doc fixes.
LabelCollection doc fixes.
Polyline doc fixes.
PolylineCollection doc fixes
More BillboardCollection doc fixes
More LabelCollection fixes
Merge pull request #1562 from AnalyticalGraphicsInc/getSetPropertiesPrimitives

Replace get/set functions with properties
Merge pull request #1563 from AnalyticalGraphicsInc/dynamicEllipsoidShow

Fix Dynamic Ellipsoid Show
Miscellaneous changes ahead of geometry refactor.

In order to make #1560 easier to review, this is a handful of simple changes I made elsewhere in the code.

1. Make BoundingSphere implement Packable
2. Add some contructor helper methods to ComponentDataType.
3. Remove unecessary memory allocation in EllipsoidTangentPlane & CzmlDataSource
4. Add a new function, `subdivideArray` for splitting an array into N equal parts.
5. Minor change to DynamicModelVisualizer to avoid paying the ES5 property penalty (until the visualizer is rewritten).

I don't think any of this warranted an update to CHANGES.