html: cancel tile jobs properly on exceptions
shade height of buildings
add Stamen water- and hillshade bitmat tile source
TileManager, pass params for min/max zoom-level and cache size in constructor
extract ThemeLoader from MapTileLayer
remove redundant null test
cleanups
fix for non-ARGB AWT bitmap
desktop: improve text rendering
--dbg
add method to create Text RenderInstruction - really need to switch to Builders..
GLRenderer, add function to set clear color
fix WKBReader