Alexis Lahouze's zsh utils.

# Plugins

## ssh-agent
Handles ssh-agent, with a unique global link per user to avoid socket
loss in remote screen after reconnection.

### zstyle parameters
1. `:xals:plugins:ssh-agent verbose`: set to "yes" to be verbose.
2. `:xals:plugins:ssh-agent global_sock`: overrides user global socket
   link path (default: `/tmp/ssh-agent-$USER`).
3. `:xals:plugins:ssh-agent enable_root`: set "yes" to enable ssh
   agent for root user.
4. `:xals:plugins:ssh-agent lifetime`: set ssh-agent lifetime.
5. `:xals:plugins:ssh-agent identities`: set identities to add in
   agent.

# Themes

TODO