+* Implement the measurement of "non-reversibility" of the state inside
+** This is a measurement of how many cards were moved to the foundations
+and how many are not on top of designated parents. See the depth_dbm_solver.c
+* Implement the parser for the state ordering based on arbitrary sortings.
+** Like +--tests-order '=asw(depth=1)'+ .
* Cache the list of the empty stacks and empty freecells inside the
soft_thread for easy reference.
** Convert the freecell.c routines to use it.