ATLASSIM-4945: fix for diff-root in 21.0
Give an option for diff-root to see an unchanged NAN as an unchanged value. By default it still registers as a change.
This makes diff-root in 21.0 behave like it does in all the other branches.
Give an option for diff-root to see an unchanged NAN as an unchanged value. By default it still registers as a change.
This makes diff-root in 21.0 behave like it does in all the other branches.