Added tilt, but still updating tile loaders to compensate.  Added lofted poly test to component tester.
Sampling great circle curves adaptively.  Switched to floating point draw offset.
The Component wasn't tracking selection IDs properly for labels and markers.  Holding on to them too long.
Merge branch 'develop' of git://github.com/mousebird/WhirlyGlobe into develop
Merge branch 'develop' of github.com:jcollas/WhirlyGlobe into develop