Support MathML elements

Author: NullVoxPopuli

package.json

@@ -59,7 +59,7 @@
   "dependencies": {
     "@ember-data/rfc395-data": "^0.0.4",
     "css-tree": "^3.0.1",
-    "ember-eslint-parser": "^0.5.5",
+    "ember-eslint-parser": "^0.5.6",
     "ember-rfc176-data": "^0.3.18",
     "eslint-utils": "^3.0.0",
     "estraverse": "^5.3.0",