Partially implement Rectangle and BoundingSphere core types
Update CSEllipsoid
Finalise CSRectangle, fix CSMatrix4 header
Remove stored ellipsoid from CSProjection, add fromRectangle method to CSBoundingRectangle
Add pass type define, remove UIColor in favour of internal use of CSCartesian4, WIP CSGlobe
Uniforms are complex...
Start implementing CSGlobe
Add port status spreadsheet
More WIP CSGlobe, add pack function to CSCartesian3
Implement CSTerrainProvider, CSTilingScheme, CSWebMercatorTilingScheme, CSCartesian2, tweak CSCartesian3/4, add fast Array types
Add CSGeographicTilingScheme
Complete CSGeographicTilingScheme
Fix cartesian type in CSProjection
Stub out a few classes
Implement CSUInt8Array
Implement CSEllipsoidTerrainProvider
CSHeightMapTerrainData progress
Add Heightmap structure object
Complete CSTerrainData base class
More heightmap work