MessagePipe Versions Save

• Add: IAsyncSubscriber/IBufferedAsyncSubscriber.AsAsyncEnumerable
• Add: MessagePipeOptions.RequestHandlerLifetime, default is Scoped(breaking changes, previously Singleton)

Fix: RequestHandler's auto registration allows multiple request handler interface on single type Fix: AddRequestHandler, AddAsyncRequestHandler allows multiple request handler interface on single type

• Add subscriber.FirstAsync(sync/async, keyless/keyed/buffered), it enables AsObservable().FirstAsync(), AsObservable().FirstAsync(predicate), AsObservable().Timeout().FirstAsync() pattern without Rx.

• Add MessagePipe.Analyzer, please see #analyzer section.
• Support IDistributedPulbisher/Subscriber on Unity.

• Support IL2CPP Managed Stripping Level: High on Unity

• Add IBufferedPublisher<T>, IBufferedSubscriber<T>. see: #buffered section.
• Add BuiltinContainerBuilder for Unity, no requires other DI library. see: #unity BuiltinContainerBuilder section.
• Improve diagnostics window for Unity

• Add: GlobalMessagePipe, see Global provider section for details
• Add: MessagePipe Diagnostics window for Unity
• Changes: MessagePipeDiagnosticsInfo holds StackTrace instead of string

• Add: DisposableBag.CreateSingleAssignment
• Change: DisposableBagBuilder.Clear disposes all elements

• Add EventFactory, see details: https://github.com/Cysharp/MessagePipe/#eventfactory

Initial release.