Merge pull request #11 from eddiemoore/dependabot/npm_and_yarn/css-tree-1.0.0-alpha.39

Bump css-tree from 1.0.0-alpha.29 to 1.0.0-alpha.39

Author: eddiemoore

package.json

@@ -26,7 +26,7 @@
   },
   "homepage": "https://github.com/eddiemoore/hydrogencss#readme",
   "devDependencies": {
-    "css-tree": "1.0.0-alpha.29",
+    "css-tree": "1.0.0-alpha.39",
     "rimraf": "3.0.2",
     "standard": "14.3.3"
   },