Add neutral Mn absorption edge data (directly)
Provide Mn absorption edge data for a neutral atom based on http://skuld.bmsc.washington.edu/scatter/AS_periodic.html, entry for Mn. Add file directly, without use of git lfs. Pre-approved by Nick.
Provide Mn absorption edge data for a neutral atom based on http://skuld.bmsc.washington.edu/scatter/AS_periodic.html, entry for Mn. Add file directly, without use of git lfs. Pre-approved by Nick.