Remisa Y Phillips

It would be nice to support offline mode (build full cache via a switch in cli). Also currently the error message in offline mode is not informative.

After updating dev dependencies to latest versions: ``` "devDependencies": { "@material/typography": "^7.0.0", "@rollup/plugin-commonjs": "^15.1.0", "@rollup/plugin-node-resolve": "^9.0.0", "@smui/button": "^1.0.0", "rollup": "^2.29.0", "rollup-plugin-postcss": "^3.1.8", "rollup-plugin-svelte": "^6.0.1", "sass": "^1.27.0", "serve": "^11.3.2", "svelte": "^3.29.0"...

urldecode doesn't work properly.