Makes VoxelLayer keep track of what costmap cells are updated
Adds ExtendedVoxelLayer which adds the option to update with differential overwrite instead of bounding box
Adds publishing of which cells are cleared by the ExtendedVoxelLayer
Added type info output about costmap plugins to ROS_INFO
Merge pull request #10 from AlexReimann/costmap_update_update

Adding ExtendedVoxelLayer
dwa_local_planner: adds feature slow down when close to obstacles
adds honk_wait_recovery package
Adds more accurate Bresenham implementation
Adds option "use_accurate_bresenham" for accurate Bresenham algorithm
adds clear_rotate_recovery package
Merge pull request #13 from yujinrobot/new_recovery_behaviours

New recovery behaviours
Merge pull request #14 from yujinrobot/obstacle_slow_down

dwa_local_planner: adds feature slow down when close to obstacles
Merge pull request #12 from AlexReimann/bresenham_accurate_hack

Adds more accurate Bresenham implementation
Merge pull request #15 from yujinrobot/layer_sync

New features, improvements and bugfixes