Move "channel" histograms into a separate class, and fix double calling of dnPosTrkContainment_.contained().
Rationalize the layout of the "channels" histograms.
Add reco channel histogram per MC PID, to compare fit component contributions to pseudodata truth.
Fix WireCluster::numCells() return type.
Hit-based histograms: get rid of a row of bins that is empty by construction.
Add the hit-based analysis channel.