WIP: Adapt to overstepping, material units, multitrajectory
This MR synchronises the acts-framework
with developments in acts-core
- the overstepping fixes
- the material unit synchronisation
- the multi trajectory in the KalmanFilter
It fixes the boundary missing in the fast simulation/propagation.
It's marked WIP as external/acts-core
is not merged into master yet.
Edited by Andreas Salzburger