Open constructors in warp data types

[tonymorris]

Hello, Is it possible please to open the constructors to warp data types, such as Settings and HostPreference and others?

I understand this rationale:

This is purposely kept as an abstract data type so that new settings can be added without breaking backwards compatibility.

Opening the constructor for these data types allows the possibility for a programming interface that preserves this property, but can add more flexibility for those who prefer it.

[Vlix]

I don't think we will. For example, since warp uses StrictData, this will cause errors if, on adding a field, other code uses this new version of warp and haven't added the field yet.
We've already seen how this breaks other's code in #1049 (albeit from the http2 package)

And HostPreference is from the streaming-commons package, btw, which is not in this repository.