feat: smaller bundles

Author: TheComputerM

packages/svelte-materialify/package.json

@@ -56,6 +56,7 @@
     "glob": "^7.1.6",
     "jest": "^26.6.1",
     "postcss": "^8.1.3",
+    "cssnano": "4.1.10",
     "rollup": "^2.32.1",
     "rollup-plugin-bundle-size": "^1.0.3",
     "rollup-plugin-svelte": "^6.1.0",

packages/svelte-materialify/preprocess.js

@@ -12,6 +12,9 @@ const processor = sveltePreprocess({
   scss: {
     includePaths: [path.join(BASE, 'theme')],
   },
+  postcss: {
+    plugins: [require('cssnano')()],
+  },
 });
 
 del.sync(['dist/**']);