--slowdyn#
--slowdyn#

- Add new switch --slowdyn# which forces block splitter to use LZ77 Optimal (iterations mode) to evaluate split point costs. Increases overall compression time, especially with high # number which indicated maximum unsuccessful iterations after last best result for this mode,
- Rename --slowsplit to --slowfix to indicate it slows down the splitter only with fixed blocks,
- Rewrite README.

MrKrzYch00/zopfli,MrKrzYch00/zopfli