Remap vim-surround to 'z' to allow vim-sneak to use 's' in operator mode

vim-sneak - use s in operator mode.vim

" documentation and source are credited to https://github.com/mgarort

" Make vim-sneak mappings more consistent in visual mode by making s go to next match and S
" go to previous match, while keeping vim-surround functionality through z 
" (mnemonics: vim-zurround) Explained in this GitHub issue:
" https://github.com/justinmk/vim-sneak/issues/268
"
" So now the behaviour is:
" - Normal: s and S to move with sneak
" - Visual: s and S to move with sneak, z to surround (zurround)
" - cs and ds: change/delete matching characters (), [], {}... with
"   vim-surround
let g:surround_no_mappings= 1
xmap <S-s> <Plug>Sneak_S
xmap z <Plug>VSurround
nmap yzz <Plug>Yssurround
nmap yz  <Plug>Ysurround
nmap dz  <Plug>Dsurround
nmap cz  <Plug>Csurround
omap s <Plug>Sneak_s
" S mapped with v to make it inclusive, similarly to other backward motions in
" my config (0 mapped to v0, ^ mapped to v^, etc)
omap S v<Plug>Sneak_S

Credits: mgarort/dotvim#1

Great! Thanks for making a gist.

Kudos to @ggandor too since I learnt about g:surround_no_mappings from him.