Lost particles state codes

Particles lost by the simulation have Particles.state <= 0. Different states are used to identify different particle loss events.

State	Information
0	Lost on explicit aperture element (e.g. LimitRect, LimitEllip etc.).
-1	Lost on global aperture limit set in the tracker.
-2	Lost due to a longitudinal cut.
-10	Lost all energy in synchrotron radiation.
-11	Found outside interpolation grid.
-333	Lost in collimator.