zsh: change LS_COLORS
zsh: increase history size
zsh: autoload all custom functions w/o define them explicitly
zsh: autoload functions using the zsh style
zsh: reformat options file
zsh: reformat completion file
zsh: change completers

 * use _match but not _correct
 * change max-errors for _approximate to 2
zsh: change matcher-list

 * make matcher-list case insensitive in all cases
 * after completing with '.', '_' or '-' as right anchor
   try a full completion automatically
zsh: change the prompt on list display and scrolling
zsh: don't insert the man section if it's section 1
zsh: don't complete uninterested users
zsh: don't complete precmd function
zsh: use flags -w and -z-4 with less