ucs-normalize takes a bit time to load

[yashi]

#58 fixes a real bug which is very nice, however, the fix requires ucs-normalize unconditionally. This adds 71 ms and doubles Emacs load time at least in my set up.

Is it possible to defer loading of ucs-normalize?
I'm not sure why it takes that long. Maybe it's the ucs-normalize we need to fix. Does anyone has a clue?
Or am I asking too much for too little gain?

Here is an output of benchmark-init-el.

╼►[benchmark-init/root nil 139ms]
  ├─[default load 5ms]
  ├─[avy require 3ms]
  ├─[migemo require 4ms]
  ├─[imenu require 5ms]
  ├─[ring require 4ms]
  ├─[s require 4ms]
  │ ╰─[ucs-normalize require 71ms]
  ├─[popwin require 4ms]
  ├─[dash require 6ms]
  ├─[thingatpt require 4ms]
  ├─[ido-ubiquitous require 9ms]
  │ ╰─[ido-completing-read+ require 3ms]
  ├─[ido-vertical-mode require 2ms]
  │ ╰─[ido require 11ms]
  ╰─[bind-key require 3ms]

[hmelman]

Maybe move the require inside of s-reverse so not everyone pays the penalty?