elisp-refs without dash.el & s.el

[amno1]

Hi Wilfred,

I am not sure if you are interested, but I have removed both dash and s from elisp-refs; can give you a PR if you would like to have it. Can be seen on:

https://github.com/amno1/elisp-refs/tree/remove-dash

Interestingly I didn't think I would see any differences in running time, but I can see some very slight speedup without dash. But really nothing spectacular, ~0.1 to ~0.5 sec, depending on benchmark and run (those benchmarks included with elisp-refs.el), but I do see the difference consistently; I runned quite a few times with each version. For any practical use, that speed difference is too small to matter of course.

By the way, I have removed dash and s, so I don't depend on any extra dependencies. I intend to include elisp-refs.el with my project so the project itself is self-contained.