IObservable support in Source and SourceT

[louthy]

IObservable can now be lifted into Source and SourceT types (via Source.lift, SourceT.lift, and SourceT.liftM).

Source or SourceT is now supports lifting of the following types:

• IObservable
• IEnumerable
• IAsyncEnumerable
• System.Threading.Channels.Channel

And, because both Source and SourceT can be converted to Producer and ProducerT (via ToProducer and ToProducerT), all of the above types can therefore also be used in Pipes.

More general support for foldables coming soon

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This discussion was created from the release IObservable support in Source and SourceT.