more internal strings
testing mapnik vector datasource
compile TagSet to Tag[]
port theme to mapbox street layers
filter tags for default locale, cleanups
beginnings of oscimap protocol v4 implementation
- extract common protobuf decoder to ProtobufDecoder
- move LwHttp and ProtobufDecotder to common
- rename MapDatabaseCallback to MapDataSink
move oscimap to oscimap2
move pbmap to oscimap version 1
- rename MAP_READER -> MAPSFORGE_FILE
- add new databases to factory
start of mapbox streets theme
theming:  use any key as label
warn if some feature matches the same instruction twice
- (and remove second RenderInstruction)
fixup MAP_READER
add TagSet.clear()
more default Tag keys
fix formatting
more work on TextureAtlas
project settings
refactor map databases