* before definition of zsh plugins set WORKPLUGIN_DIRS variable with
list of your "work" directories relative to your $HOME, such as
WORKPLUGIN_DIRS=('work' 'src')
* now you can use work command in your zshell, which will change CWD to
first occurrence WORKPLUGIN_DIRS sub folders
* directories competition is supported
* also, you can define WORKPLUGIN_CALLBACK function, which will be
called after directory change. In my case, I use it to call
virtualenvwrapper's `workon` function
