Option to bypass bracketMinimum's exponential increase in dx

[AlvyneZ]

I like the package and I'm trying to integrate it into a project I'm working on.

The function I want to search through has multiple extremas that do not have a predictable period between each other. With the exponential increase in dx, the minimize will miss a couple of extremas which is unacceptable in my use case.

Everything works perfectly after this line (ln46) of bracket-minimum.js is commented out:

dx *= n < 4 ? 2 : Math.exp(n * 0.5);

I think adding this option will make the function much more robust.
Thanks.