update ember-css-transitions

Author: miguelcobain

package.json

@@ -62,7 +62,7 @@
     "ember-basic-dropdown": "^0.16.0",
     "ember-cli-babel": "^5.1.6",
     "ember-composability-tools": "0.0.5",
-    "ember-css-transitions": "0.1.7",
+    "ember-css-transitions": "0.1.8",
     "ember-power-select": "1.0.0-beta.23",
     "ember-wormhole": "0.4.1",
     "resolve": "^1.1.7",