text: def declare_variables(variables, macro):
      @macro
      def since(version):
          "Add a button"
          HTML = """<a href="https://github.com/janoszen/containerssh/releases" target="_blank"><span class="since"><span class="since__hide">(</span><span class="since__text">since</span> <span class="since__value">%s</span><span class="since__hide">)</span></span></a>"""
          return HTML % (version)
  