Removed _forceSinglePhase, _forceTwoPhase (not used), specify_phase() should be used instead

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Really this time un-specify the phase

More logical debug output for invalid phases

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Quit Brent if solved to within numerical precision

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Byebye to Armadillo (maybe reconsider later on)

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Gridded table builds

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>