Rationale to dimiss strong wolfe linesearch

[vroulet]

Hello,

Thank you for all your work! I was wondering why in the docstring of the strong wolfe linesearch the authors say the following.

This algorithm is mostly of theoretical interest, users should most likely use `MoreThuente`, `HagerZhang` or `BackTracking`.

Has there been a benchmark that supports this claim in terms of function evaluations and overall performance when combined with e.g. LBFGS?