Allow fuzzy searching

[Seldaek]

In Sublime Text for example, or also in Launchy and Wox which are similar launchers to Cerebro, you get fuzzy search that works like this: if I type "abcd", it searches for anything with an a in it, then a b in it occurring after the a, then a c occurring after the b, etc.

This allows for very quick filtering when you have similar paths, like say you have "SomethingLongBlue" and "SomethingLongRed" and you want to access the second one, you can type somr and it will filter both from som and narrow it down to the red one with the r.

I don't know if this should be by default or as an option, I think by default is good enough and I am happy to provide a patch to the search function but I wanted to hear first what you think.