Acts upgrade changes that should work with 8.3.0
These changes should all work with v8.3.0, and should remove some of the technical risk involved in the upgrade.
Questions for discussion @whit @sly2j:
- The magnetic field caches (bCache) are now created inside
execute()
and (probably) used on a per-event basis. These could theoretically be per-thread if we get them ininitialize()
.