Switch from remeshing to mesh morphing near the optimal design

[sean-engelstad]

Need a way to classify the phases of the design history into:

1) moving towards xstar, significant changes in function values and design variables 2) oscillating around xstar due to remeshing noise

Solutions: could think of some mathematical rules, use machine learning.

Alternative but weaker resolutions:

• just use weaker opt tolerance and only do remeshing
• optimize first with remeshing script then with mesh morphing manually

[sean-engelstad]

• Should automatically do this in the Fun3dAim and TacsAim according to Marshall in that it will only generate a new mesh if the topology change is significant enough.
• So then maybe we need to turn on mesh morphing flag even for remeshing case - and that would do it?