No documentation on css macro libraries (.cml)

[jakub-g]

There's no documentation in usermanual on css maco libraries.

Basic usage is as follows:

https://github.com/ariatemplates/ariatemplates/blob/master/test/aria/templates/csslibs/csslibsenv/MainCss.tpl.css#L12

{CSSTemplate {
    $classpath : "test.aria.templates.csslibs.csslibsenv.MainCss",
    $csslibs : {
      myCssLib : "test.aria.templates.csslibs.csslibsenv.libs.MyChildLib"
    }
}}

  {macro main()}
    div.CssLibTestContainer {
      background-color: ${myCssLib.something()}
    }

{/CSSTemplate}

some examples:
https://github.com/ariatemplates/ariatemplates/tree/master/test/aria/templates/csslibs/csslibsenv/libs

Actually we have a misleading and pretty outdated statement saying

Note: At the moment, macro libraries cannot be used in CSS Templates.