Bumping core to 2.7.0

Author: aleksip

composer.json

@@ -30,7 +30,7 @@
     },
     "require": {
         "php": ">=5.5.9",
-        "pattern-lab/core": "^2.1.0",
+        "pattern-lab/core": "^2.7.0",
         "pattern-lab/patternengine-twig": "^2.0.0",
         "pattern-lab/styleguidekit-twig-default": "^2.0.0",
         "pattern-lab/drupal-twig-components": "^2.0.0",