April 30th, 2024

New this release:

• 🎉 (client, smithy-rs#119, smithy-rs#3595, smithy-rs#3593, smithy-rs#3585, smithy-rs#3571, smithy-rs#3569) Added support for waiters. Services that model waiters now have a Waiters trait that adds
  some methods prefixed with wait_until to the existing clients.

  For example, if there was a waiter modeled for "thing" that takes a "thing ID", using
  that waiter would look as follows:

  use my_generated_client::client::Waiters;
  
  let result = client.wait_until_thing()
      .thing_id("someId")
      .wait(Duration::from_secs(120))
      .await;

• 🐛 (all, smithy-rs#3603) Fix event stream :content-type message headers for struct messages. Note: this was the :content-type header on individual event message frames that was incorrect, not the HTTP content-type header for the initial request.