The pitch limit can be used by the laucnhdetector to limit pitch during
critical phases of a launch. For example this can be used to limit pitch
while attached to a bungee differently from the standard pitch limit.
The launchdetector now has a intermediate state (controlsenabled) which
is meant to be interpreted by the controller as: "perform attitude
control but do not yet power up the motor". This can be used in the
floating phase during a bungee launch for example.
