Continues work on and XRFView that saves.  Now it can save scans! Maybe,
Added defualt ABs
added prompt for user folder on startup
Woraround for inconsistent mono status updates on move - watches mono motor PV status directly
Tweak current readout bars to show meaningful ranges
Merge branch 'newXRFDetector' of github.com:acquaman/acquaman into newXRFDetector