Better wrapping of original osr.SpatialReference. Direct subclassing does not work.
Minor beautifications.
Better lookup for layer factories. Needs some work though.
Registration tries to automatically detect the EPSG code of the provided projection.
Further implemented WMS GetMap. Removed various bugs. WMS now works for normal viewing and outlines, whereas the styles parameter does not seem to have any effect.
Implemented cache for each band in a rangetype.