0.0.8

• major improvement in memory usage (<160MB in worst-case test-scenarios):
  plotMap() is now called every configuration.CHECK_PERIOD_IN_SEC*4.0 i.o. every configuration.CHECK_PERIOD_IN_SEC
  This means e.g. every 2 seconds instead of every 0.5 seconds.
  The update rate is still very high, as for now we just update static maps.
  In future we want to update maps "dynamically".