Make FOV apply to the larger window dimension as discussed in #1591.
Remove the setter for .fovy on advice from @bagnell.
cleanup PolylinePipeline
simple polyline WIP
simple polyline
cleanup simple polyline
Merge branch 'master' into polylineArc
PolylineGeometry
cleanup tests
jazz up sandcastle examples
fix heights
Merge branch 'master' into polylineArc
Merge branch 'master' into polylineArc
don't raise to surface for geometry updater
doc great arc
Add DataSource support for polyline raiseToSurface and granularity

Also add CZML support and update simple.czml to set raiseToSurface to false.
Merge branch 'master' into polylineArc
raiseToSurface -> followSurface
Fix comment typo
Prevent geometry flashing when re-batching primitives

When we need to rebatch "static" primitives, for example because an object has gone from solid to translucent or the data sources performed an update; the old primitives would be removed but the new primitives would not show up until they were ready.  This caused it to look like the data was flashing on/off as it was being processed.

This change simply keeps the old primitive around until the new one is ready.  It also needed to tweak `Primitive.show` in order to actually cause geometry to be created when the show was set to false.

Also use `Primitive.ready` where appropriate instead of the private variable.
Merge pull request #1902 from AnalyticalGraphicsInc/flashing-geometry

Prevent geometry flashing when re-batching primitives