Feature Request

Hi Dan,

first of all - really great tool!!
Working with it I came across a few things which would increase it's usability. I had a look in the source code but it seems to be not that straight forward to implement these - at least for me.
First it would be really useful to define the forced top and bottom transition locations within the operation points instead of or additionally to the xfoil_run_options namelist. The same could be useful for the viscous_mode, too.
It seems that xoptfoil keeps the trailing edge gap of the seed airfoil for all optimized airfoils. Would it be possible to let the optimizer change the trailing edge gap. It could be constraint by additional thickness constraints at x=1?
For such (high lift) airfoils with larger trailing edge gaps a negative trailing edge wedge angle is often present and advantageous. By default the code prohibits negative trailing edge wedge angles. I can imagine that opening up for negative wedge angles could cause problems with inverting profiles.

Thanks a lot for any comments and consideration.
Enno