Issue #2291449 by Cottser: Add Twig template inheritance based on the theme registry, enable adding Twig loaders
Issue #2308187 by lauriii, iMiksu, joelpittet, dawehner, er.pushpinderrana: Provide a twig extension for file_create_url
Issue #1777332 by hass, Cottser, mike.roberts, joelpittet, dawehner | jenlampton: Replace theme_menu_link() and menu-tree.html.twig with a single Twig template.
Issue #2073811 by dawehner, pwolanin, joelpittet, Cottser, Mark Carver, steveoliver: Add a url generator twig extension.
Issue #2227869 by joelpittet: Remove magic printing from Attribute class to make Twig 'without' filter work for attributes.
Issue #2114563 by joelpittet, martin107, Cottser: Remove TwigReference with the help of 'without' filter replacing 'show'/'hide' functions.
Issue #2177093 by sun, alexpott, InternetDevels, Xano: Remove 'access content' permission from all test module routes.
Issue #2051097 by dawehner, Manuel Garcia, tlattimore, neclimdul: Change 'pattern' to 'path' in *.routing.yml files.
Issue #1981368 by tim.plunkett, Crell, webchick: Convert all routes to 'module_name().foo_bar()' naming convention.
Issue #1927584 by Mark Carver, ezeedub, drupalninja99, Cottser, geoffreyr, John Bickar, jenlampton, penyaskito: Add support for the Twig {% trans %} tag extension.
Issue #1975462 by thedavidmeister, alexpott, chx, joelpittet: Fixed Allow and test for NULL and integer 0 values in Twig templates.