Merge remote branch 'upstream/develop' into develop

src/com/t_oster/liblasercut/LaserJob.java

src/com/t_oster/liblasercut/Raster3dPart.java

src/com/t_oster/liblasercut/RasterPart.java

src/com/t_oster/liblasercut/VectorCommand.java

src/com/t_oster/liblasercut/VectorPart.java

src/com/t_oster/liblasercut/drivers/Dummy.java

src/com/t_oster/liblasercut/drivers/EpilogCutter.java

src/com/t_oster/liblasercut/drivers/LaosCutter.java

src/com/t_oster/liblasercut/drivers/Lasersaur.java