code: func New(s []string) Env {
  	e := Env{
  		CaseInsensitive: SystemIsCaseInsensitive(),
  	}
  	e.LoadSlice(s)
  	return e
  }
docs: // New instantiates a new Env instance from the supplied set of environment
  // KEY=VALUE strings using LoadSlice.
  //
  // The environment is automatically configured with the local system's case
  // insensitivity.