Milestone #13399: Parent reconstruction milestones/tasks for reconstruction necessary for MCC8 and reconstruction "v6"
Bring-in ideas already developed external to Pandora and add missing shower properties and a general level of sophistication missing in the current output showers, which are essentially only containers of Hits. Includes ideas regarding shower merging, which is discussed in more detail below. Any dependence on external PCA libraries mean these algorithms are best developed as part of the larpandora package, alongside the client app. There is already a post-Pandora implementation for merging existing (shower) particles and it will be interesting to see how this affects the current pattern recognition performance metrics.