virtual driver for lookat_chain
nice indentation
launch file used for both HW and Sim
moved launch and config file here
Merge branch 'hydro_dev' into hydro_syncmm
voltagectrl work in progress
work in progress voltagectrl with cob_phidget
Merge branch 'groovy_dev' into feature/voltagectrl_newphidget

Conflicts:
	cob_voltage_control/ros/src/cob_voltage_control_ros.cpp
Merge branch 'groovy_dev' of github.com:ipa-bnm/cob_driver into feature/voltagectrl_newphidget
update changelogs
0.5.3
some changes for easier usage of cob_trajectory_controller with simulation
first draft for cob_twist_controller
remove commmand_vel topic mapping due to new node in cob_controller_configuration_gazebo
transform twist to correct frame, limit velocities, introducing damped-least-square ik-vel-solver
add dynamic_reconfigure for cob_trajectory_controller
do not require set_opmode service in simulation
read parameters for twist_controller from yaml file
merge with hydro_syncmm
minor
minimal implementation of virtual lookat_driver