Refactor to loosen semver ranges

Author: wooorm

package.json

@@ -29,11 +29,11 @@
   "dependencies": {
     "hast-util-from-parse5": "^5.0.0",
     "hast-util-to-parse5": "^5.0.0",
-    "html-void-elements": "^1.0.1",
+    "html-void-elements": "^1.0.0",
     "parse5": "^5.0.0",
     "unist-util-position": "^3.0.0",
     "web-namespaces": "^1.0.0",
-    "xtend": "^4.0.1",
+    "xtend": "^4.0.0",
     "zwitch": "^1.0.0"
   },
   "devDependencies": {