Added global optimum information
Remake minmax_func5 function
Added a script to analyze optima of minmax_func5
Added a new solver min-max JADE
Show two figures for min and max parts
Fixed a boundary handling issue
Refine the min-max runner

Now, any figures are closed before running a solver. The number of
maximal function evaluations are increased to D * 1e6. A boundary
candidate is added for minmax_func5.