• BREAKING: Changed a few things in the ApolloCodegen library to use object.apollo.extensionMethod syntax rather than object.apollo_extensionMethod. There's a few things that are still using apollo_ notation due to constraints around conditional conformance, but you should particularly check your swift scripts for changes around FileManager APIs. (#1183)
• BREAKING: NormalizedCache now has a method for explicitly clearing the cache synchronously, in addition to the existing method to clear it asynchronously. If you've got a custom NormalizedCache implementation, you'll need to add an implementation for this method. (#1186)
• Fixed race conditions in URLSessionClient that were causing unexpected behavior. Turns out concurrency is hard! (#1227)
• Improved handling of a dependent key update cancelling an in-flight server fetch on a watcher. (#1156)
• Added option to Swift Codegen to pass in a prefix for custom scalars. (#1216)
• Added ability to change a header on a websocket connection and automatically reconnect. (#1224)