Change 'template_from_string' twig function to use the abstract parsers.
Change 'template_from_string' twig function to use the abstract parsers.

justjohn/twig.js,dave-irvine/twig.js,dave-irvine/twig.js,justjohn/twig.js,twigjs/twig.js,twigjs/twig.js,twigjs/twig.js,justjohn/twig.js,dave-irvine/twig.js