Mantid Imaging 2.7.0 beta1

This release introduces significant user interface changes to the Spectrum Viewer window including adding the ability to export single and multi-spectrum data in a format that can be read by RITS. It is now possible to select one of two error modes (Standard Deviation and Error Propagation) to export Spectrum data with.

Mantid Imaging 2.7.0 brings about improved speed of the imageview by avoiding unneeded calculations. For a full list of changes, see the Release Notes