Consider deprecating Expectations altogether in favor of LazyTest?

[seancorfield]

LazyTest does a lot of things I wanted to do with Expectations but couldn't achieve because of the clojure.test compatibility considerations.

With the ability to run clojure.test (+ Expectations) and LazyTest via my external test runner for Polylith and my fork of test-runner, and LazyTest's Expectations extensions namespace, there's very little incentive to continue maintaining Expectations here -- folks can migrate to LazyTest fairly easily and I think it's a much better testing library.

/cc @NoahTheDuke