Added Tester app for WhirlyGlobeComponent
Exposed the locations of projected shapes in the screen space generator.  This will be useful for a number of things.  Selection layer now correctly handles screen space (2D) object selection.
Added a temporary hack for the screen space objects being displayed behind the globe.
Added more base layers to the WhirlyGlobeComponent Tester.  Fixed the Component build script to build WhirlyGlobeLibe first.  Now taking animation (fade, mostly) into account for scene rendering optimization.  Turned back of globe fix back off for screen space objects.
Added support for labels and 3D markers in the Component.
Hooked up configuration popover.  Added support for object deletion in globe component.
Added default visual descriptions for the various data types in the Component.  Also added a rendering hints dictionary and hooked up z buffering.
Added culling as a rendering hint and hooked up zbuffering.
Hooked in drawing priority for the defaults in the Component.
Merged in some guard code implemented for a client. A few documentation changes.
Fixed fade in the Component and a fade bug in the on demand rendering.  Fixed a selection bug in 2D labels.
Added support for tracking view locations from a geo coordinate.  Low level support is in WhirlyGlobe and high level in WhirlyGlobeComponent.  Also fixed a small bug related to lagging quad loader updates.
Cleaned up the example selection view a little.
Added delegate method for when user taps, but doesn't select anything in Component.
Messing with the screen space generator's back face calculation.
Fixed culling/loading bug associated with spherical mercator vs. geographic coordinates.
Put perspective back face hack in place for screen (2D) objects.  Ick.
Moved horrible back globe hack over to the view watcher.
Added ability to turn on/off gestures in the component.  Added clear color to the component.  New refresh functionality in the quad display layer.  Started on edge matching in the globe, but turned off.  Can now do filled shapes in the vector layer.  Will only work for small shapes or zBuffer=no.  A few geometry layer improvements.
Finished the skirts for quad tiles.  This hides the vertical edges between paged tiles.