Start points from history
Add possibility to choose start points from a history file or a folder with history files.
Would it be better to do it via setting x_guesses (#445 should be implemented) or via startpoint_method (maybe something along these lines https://github.com/ICB-DCM/pyPESTO/commit/e1d3c3ffcc9ad09df4c467ddf06e28875600b3fa)?
x_guesses is intended for static starting points, while startpoint_method is intended to generate them dynamically (which could be sampling from a limited pool). I think both can make sense, but I would argue that x_guesses seems more appropriate since the number of possible starts points is indeed finite and the function that sets x_guesses can probably provide more fine-grained filtering than what is possible with startpoint_method.
Thank you for the explanation!
In this case, it probably makes more sense to fix #445 and implement #259. Then one can just use OptimizeResult.get_for_key.