restructure code
Merge branch 'master' of github.com:TomTasche/mapsracer into issue/4
implement NodeFetcher
cleanup code for fetching clusters
remove log statements in VectorMagic
update TODOs
dynamically calculate size of cluster to load
drastically improve dynamic cluster-loading
fix CoordinateUtil.positionAt()
implement GraphPainter (debugging only)
increase default window size
drag map in DEBUG
draw information as they are loaded
fix concurrent modification; cleanup code
Merge pull request #9 from TomTasche/issue/4

fix issue #4: dynamically reload new clusters