Add pixel width to REF_M  and REF_M IDF

Use OPENMP if available

Suppress clang 4.0 warnings on OS X

Fix min range in Integration for 0 events

Fix performance regression in ExperimentInfo::getInstrument

Make ILiveListeners Algorithm Aware

ExperimentInfo::getInstrument is slow otherwise. This is a problem,
since getInstrument is called by getDetector, i.e., for every pixel in
an instrument.

LR reduction from workspace

Fix implicit cast warnings

Version passing in python test helper

Do not sort events in LoadLiveData

Fix CurveFittingTest_FitTest on MacOS with GSL v2

Release notes for changes to vtkThreshold filter

Fit browser ties bug

19200 hfir log binning

Add invalid ICAT login test

Change peak zoom level for SliceViewer

Reflectometry interface: Event mode handling now avoids loading workspaces already present in ADS.