Max probability function for CTQW

[adamglos92]

Determine function determining max probability function for CTQW. Probably needs to determine interval in which the maximum exists, then make bisection.

[adamglos92]

Implemented using Optim. First max probability will be interesting to implement, need to find local maxima.

[adamglos92]

Further changes implemented, still problem with optimizing (choosing best expected runtime is not a good choice without corrections)