theme: enhance colored segments (slash)
theme: fancy prompt sign [1], user@host with SSH only

1: https://github.com/sindresorhus/pure
Git plugin: new alias/functions
zstyle: vcs_info adjustments (moved from theme)
Do not set autonamedirs

It will use all vars for '%~' expansion!
xrgrep: add --debug option, extend excludes
Do not alias "ag" (=> The Silver Searcher)