0.4.0 checklist

[beardedeagle]

1. Required
   • typespec everything
   • use structs throughout lib
   • drop config dir and files
   • doc everything
   • test coverage to 100%
   • expand distributed testing to cover more cases
2. Optional
   • add replication factor support
   • add callback to refresh cluster

[beardedeagle]

Effectively all that remains is converting the test suite to local_cluster and ensuring we hit 100% coverage, especially in regards to distributed testing.