Added check for tokens before dereference
Added IIR filter to velocity feedback calculation.
Added a copy of sdu weeding trial for doing row weeder demo
Added quickui for quickly prototyping a GUI
Removed debug from roboteq library
Updated rowweeder demo app to latest
Merge remote-tracking branch 'upstream/master'
Added velocity publisher from RoboTeq controller
Added implement control to navigation demo
Merge remote-tracking branch 'upstream/master'
differential_odometry_node: Added max_ticks_per_update launch parameter.
sdu_weeding_trial_2013: Bug fixes and updates made during field tests.
int_stamped_to_encoder: Updated to support topic names as launch parameters
pose_2d_estimator: Corrections made to Armadillo IV launch file.