v0.8.0

Breaking Changes

• async_tungstenite is no longer a default feautre, you should explicitly
  enable it if you need it.
• Updated to tungstenite 0.21
• MSRV is now 1.69 (there was no official MSRV before)
• Subscription IDs sent to the server are now just monotonic numbers rather
  than uuids.

Deprecations

These will be removed in a future version, probably in v0.9.0

• AsyncWebsocketClient and all its supporting traits and structs are now
  deprecated.
• The async-tungstenite feature flag is deprecated and will be removed in
  favour of tungstenite eventually.

New Features

• Added an entirely new client API as a replacement for the old API.
• Added a subscribe function to next::ClientBuilder to make
  creating a single subscription on a given connection easier.

Changes

• graphql-ws-client now depends only on tungstenite and not directly on
  async-tungstenite (or tokio-tungstenite). This should allow it to work
  with more versions of the async libraries (provided they support the same
  tungstenite version).