Fix "%s" % liquefied looking for `to_s`
Fix "%s" % liquefied looking for `to_s`

For implicit conversion, some ruby methods expect our object to have
defined `to_s` or else it looks for `to_ary` in order to run either:

    "%s" % liquefied       # implicitly becomes:

    "%s" % liquefied.to_s  # if responds_to?(:to_s) or :to_str
    "%s" % [liquefied]     # if responds_to?(:to_ary)

avit/liquefied,avit/liquefied