New autotuning search strategy with random and simulated annealing

[khuck]

Try a new approach to simulated annealing:

• perform random search
• use "best" point to begin simulated annealing

[khuck]

Not implemented. Instead, we have the "automatic" search strategy which will select the right search algorithm based on the features to be searched. The algorithms are exhaustive, random, simulated_annealing, genetic_search and nelder_mead.