v0.8.0-rc.1

Breaking Changes

• The next api is now available at the top level rather than the next
  module.
• async_tungstenite is no longer a default feautre, you should explicitly
  enable it if you need it
• Updated to async_tungstenite 0.25
• Renamed Client::streaming_operation to subscribe in next api.
• MSRV is now 1.69 (there was no official MSRV before)

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.

New Features

• Added a subscribe function to next::ClientBuilder to make
  creating a single subscription on a given connection easier.