Irena ver. 2.67, Nika ver. 1.80, and Indra ver. 1.95

Igor 8 compatible release with some fixes:
Irena:
Igor 8.0 tested.
Size distribution - added power law slope to Background so one can subtract also low-q power law slope. Added buttons to perform power law fit and background fit. Added option to fit the parameters when data are added to the tool.
Nexus exporter - changed to use 1/angstrom for Q as sasView below 4.1.2 (probably below 4.3 at least) cannot convert Q units on import.
Unified fit - modified how the limits and steps are handled when user set value to 0. Fixed Uncertainty analysis in Unified fit which seems to have failed on Igor 8.
Created depository for user contributed form factors on Github: https://github.com/jilavsky/SAXS_IgorCode/tree/master/User%20form%20factors%20for%20Irena

Nika:
Igor 8.0 tested.
Fixed NEXUS exporter to save data which are easily compatible with sasView. sasView has serious limitations on what it can accept as input NXcanSAS nexus data.
Removed range selection controls and moved Save data options to its own tab "Save"
Added ImageStatistics and control for user for delay between series of images.
Added font type and size control from configuration to be used for CCD image label.
Added ability to fix negative intensities over subtraction. Checkbox on Empty tab and if checked, ~1.5*abs(V_min) is added to ALL points intensities.

Indra:
Igor 8.0 tested.
Modified behavior of Automatic blank selection in GUI.