Draft: (Not for merging) old peakfinding integration sketch
Before switching the implementation target to to online indexing, I was working on feeding peaks to OnDA, effectively replacing the onda-monitor with a TrainMatcher. I just reuploaded this branch (had deleted it, but it was lying around on my laptop) to pull out the old prototypes. Will probably put in crystfel-integration. Which I should just rename to SFX-something.