2.1.0

• breaking change: AncestorT<> renamed to StateT<>

• added immediate versions of transition method on the M::Root that don't require subsequent update() or react()

• added query(TEvent&, ConstControl&) state method

• plans can now be accessed from the M::Root

• tasks can now be succeed()ed and fail()ed from the M::Root

• changed LoggerInterface methods to take const Context&

• fixed copy / move ctors

• fixed subsequent plan execution after previous plan failure