Add semi-detailed print-out level to diff-root (addresses ATEAM-563)
Adds a semi-detailed print-out mode to diff-root in which we print the leaves that differ but not every value of the differences.
cc: @jchapman
Adds a semi-detailed print-out mode to diff-root in which we print the leaves that differ but not every value of the differences.
cc: @jchapman