Altered:
- Turns out I wasn't taking into account the I0 choice for scans when
making the normalization analysis blocks.  This has been remedied.
Added:
- Summing the single element and four element detectors together before
making a region of interest to 2D, EXAFS, and line scans.  Still needs
testing.
Merge pull request #763 from acquaman/Issue681

Pull Request: Issue681