The solvers for u0/a0 and v now each have parameters tolerance,
maximumIterations, verbosity

Also, do a 1-6-0 TNNMG with (six) V-3-3 cycles

The code for Laursen's model is long gone

This reverts commit 17bd6ae8e51c2cbdcf9ec87bbcb79c87ab81c61d.

This partially reverts d84ddb712891e2fe8a4bd067589a31c86e8a3eea