twil_ident: first version

twil_controllers: Linearizing controller based on KDL model renamed to cart_linearizing_controller_rne.
Implemented new linearizig controller based on identified model
Implemented non-smooth backstepping controller (working?)

twil_description: included front wheel
included argument for paused start in simulation launch files

Initial commit
twil_control_gazebo

twil_controllers: Linearizing controller uses dynamic model computed
though KDL, which does not work for mobile robots.

twil_description