Draft: Alternative persistencies for heavy-ion data taking 2025
Two new persistency versions
1.2 -> Removing of Downstream track and protoparticles 1.3 -> Removing of Upstream and Downstream tracks and protoparticles
Only one of them will be kept, and the MR deleted if we end up choosing the version 1.1.
The MR also includes functions to simplify track location access
Goes with !Moore!5385
Edited by Samuel Belin