Moved levels around to correspond better to scales.  Fixed a color problem.  Turned file optimization back on.
Documentation
Remote vector tiles working.  Lots of bug fixes.  Caching yet to do.
Web output mode.  Lots of fixes.
Merge branch 'develop' of https://github.com/mousebird/WhirlyGlobe into develop
Caching working for vector tiles.
Merge branch 'develop' of https://github.com/mousebird/WhirlyGlobe into develop
Fixed some crashing bugs.  Messing with scaling.
Merge branch 'develop' of https://github.com/mousebird/WhirlyGlobe into develop
Merge remote-tracking branch 'upstream/develop' into develop