### Changed
- **Breaking**: Websocket protocol is not automatically added anymore
if the user specifies a protocol in `libp2p.modules` when using
`Waku.create`.
- **Breaking**: Options passed to `Waku.create` used to be passed to
`Libp2p.create`; Now, only the `libp2p` property is passed to
`Libp2p.create`, allowing for a cleaner interface.
- Examples (cli chat): Use tcp protocol instead of websocket.
### Added
- Enable access to `WakuMessage.timestamp`.
- Examples (web chat): Use `WakuMessage.timestamp` as unique key for
list items.
- Doc: Link to new [topic guidelines](https://rfc.vac.dev/spec/23/) in
README.
- Doc: Link to [Waku v2 Toy Chat specs](https://rfc.vac.dev/spec/22/) in
README.
- Examples (web chat): Persist nick.
- Support for custom PubSub Topics to `Waku`, `WakuRelay`, `WakuStore`
and `WakuLightPush`;
Passing a PubSub Topic is optional and still defaults to
`/waku/2/default-waku/proto`;
JS-Waku currently supports one, and only, PubSub topic per instance.