Move URLs to be strings in the examples: https://github.com/slightlyoff/ServiceWorker/commit/d7985c230c86a0373cac9d09254fda49137051e2
Move CacheList to be async in the examples and more: https://github.com/slightlyoff/ServiceWorker/commit/de3f1f7ae58235a13e2a7923a6b5e433a5ad3c11
Update SotD, extensions section and more