Add support for global class composition & compose-with (fixes webpack-contrib#176)

Author: Marko Raatikka

package.json

@@ -10,9 +10,9 @@
     "object-assign": "^4.0.1",
     "lodash.camelcase": "^3.0.1",
     "postcss": "^5.0.6",
-    "postcss-modules-extract-imports": "1.0.0-beta2",
+    "postcss-modules-extract-imports": "^1.0.0",
     "postcss-modules-local-by-default": "^1.0.0",
-    "postcss-modules-scope": "1.0.0-beta2",
+    "postcss-modules-scope": "^1.0.0",
     "postcss-modules-values": "^1.1.0",
     "source-list-map": "^0.1.4"
   },