Updates and tests for the InterpolatorUtils
Merge branch 'master' of ssh://dascgitolite@dasc-git.diamond.ac.uk/scisoft/scisoft-core.git
Fixed imports after merge.
Ensured doubles are passed back in python ROIs and fixed dict/map
difference in missing key behaviour
updates for 1D interpolation needed in ARPES
Merge branch 'master' of ssh://dascgitolite@dasc-git.diamond.ac.uk/scisoft/scisoft-core.git