Support version ranges for streaming libraries

[sullivan-]

Right now, I only target the most recent versions of all the various streaming libraries. It would be nice to support a range of versions, from the most recent, down to the latest version that is compatible with the most recent. This would involve a test suite that would test across all these library versions. Some SBT-fu required.

This would really be great to have, but a little too much effort for me at the moment.