Minor fix for initial dt. We need to reset dt at the end of

[cgilet]

InitialIterations in order to get the specifed dt. Otherwise, we can end up with dt = initial_dt*change_max.

[ajnonaka]

This is fine. A separate question would be, do you want the dt to increase at all during the initial iterations.

[cgilet]

@ajnonaka The dt is fixed during the Initial iters and does not increase, because it calls apply_predictor, and apply_predicitor does not compute dt (that's done in advance). It's just incflo::InitialIterations() calls ComputeDt at the beginning, and then incflo::advance() also calls it at the start. So this one reset at the end of InitialIterations should be enough, I think.