Changes from Version 0.12.0 to Version 0.12.1

Release Date: 07.10.2010

- TraCI
  - added a possibility to access a vehicle's signals, wipers, and other things; see Vehicle Value Retrieval, Change Vehicle State, and Vehicle Signalling
- Simulation
  - corrected direction when departing at a lane's begin
  - introduced a new `departpos` named "`base`". The vehicle starts at position=vehicle_length+.1, this means at the begin of the lane, but being completely on it. This `departpos` is now the default. (see Definition of Vehicles, Vehicle Types, and Routes#Vehicles and Routes).
  - addressing teleports
    - corrected "incoming lanes" determination
    - added the option --lanechange.allow-swap; if enabled, vehicles blocking each other are exchanged
- GUI
  - debugged traffic lights tracker broken when moving to subseconds
- netconvert
  - OSM-Import
    - osm importer fails fast - furtherly given files are not processed in the case of an error
    - assigned default velocities to not-numerical maxspeed values ('none':300km/h, 'walk':5km/h); was: defect 344: The TAPAS Cologne scenario does not work with the current(0.12.0) SUMO version - maxspeed not numeric
    - parsing maxspeed values given as '50 km/h'; was: defect 344: The TAPAS Cologne scenario does not work with the current(0.12.0) SUMO version - maxspeed not numeric
    - new option --osm.skip-duplicates-check added which, well, skips checks for duplicate nodes and edges

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