CompactBha - reduced output due too high degree of noise when cBHA is
unavailable
Correction in Control, use size_t for separator (for parsing commands)
Also, separator position is not changed initially, but should instead
be changed when used (to avoid including whitespace in start of substring)
_OmniDrive now overrides setVelocity() from API2, enabling using the
function without first "stopping" Brain.
When setVelocity() is called, the normal automatic drive control is
suspended. Automatic drive control is resumed on recieving a new
destination.
Known issue: The new velocities are not sustained, Robotino stops
in about half a second. For current use cases this does not pose a
problem, it should however be resolved as it is not the intended
behaviour.
Control: added a command "speed", to test the new setVelocity() override in
OmniDrive. The command takes up to three parameters, separated by
spaces, that are parsed to floats, x, y and omega.