Upgrade PostCSS to 7.0.2

Aaron Ballard · jonathantneal · commit 57bfc092647a · 2018-08-15T17:50:27.000-04:00
diff --git a/package.json b/package.json
@@ -25,7 +25,7 @@
     "node": ">=4.0.0"
   },
   "dependencies": {
-    "postcss": "^6.0.22",
+    "postcss": "^7.0.2",
     "postcss-values-parser": "^1.5.0"
   },
   "devDependencies": {
