Merge pull request #28 from tobiasandersson/master

bunch of stuff
Merge pull request #29 from tobiasandersson/master

add reset pid callback
Merge pull request #30 from tobiasandersson/master

update p value
Update turn_controller.cpp

update params
accumulate control signal
remove const
parameter adjustments and motor constants dependent now on pwm, not v and w
decrease kp for new motor controller
decrease breaking kp for new motor controller
adjust turn parameters and fix some issues
Merge pull request #31 from mlosch/master

Motor controller uses accumulation now
use two p controllers for both walls
Merge remote-tracking branch 'upstream/master'
use filtered distance publisher directly
add motor constant calibrator
more outputs at the right place
use lowpass filter
give initial filter value
use hysteresis for constant application
do not accumulate p in wall follower