Update deps

Author: codechips

package.json

@@ -14,12 +14,12 @@
     "last 1 chrome versions"
   ],
   "devDependencies": {
-    "@fullhuman/postcss-purgecss": "^1.3.0",
+    "@fullhuman/postcss-purgecss": "^2.1.0",
     "autoprefixer": "^9.7.3",
     "eslint-plugin-svelte3": "^2.7.3",
     "parcel-bundler": "^1.12.4",
     "parcel-plugin-svelte": "^4.0.5",
-    "prettier": "^1.19.1",
+    "prettier": "^2.0.2",
     "prettier-plugin-svelte": "^0.7.0",
     "svelte": "^3.16.7",
     "tailwindcss": "^1.1.4",