Update for Beta 3
Update for Beta 3

use wpi::priority_mutex inplace of priority_mutex

kauailabs/navxmxp,kauailabs/navxmxp,aeastet/navxmxp,aeastet/navxmxp,kauailabs/navxmxp,Beachbot330/navxmxp,Beachbot330/navxmxp,Beachbot330/navxmxp,Beachbot330/navxmxp,Beachbot330/navxmxp,kauailabs/navxmxp,kauailabs/navxmxp,kauailabs/navxmxp,aeastet/navxmxp,Beachbot330/navxmxp,aeastet/navxmxp,aeastet/navxmxp,aeastet/navxmxp,kauailabs/navxmxp