0.3.0 Implementation specific code now in (json-rpc private compat).
      Implemented batch requests.
      Fixed bugs for corner cases.
      Added "integration" tests.
      Increased robustness of json-rpc-loop.
      Several bug fixes.

0.2.1 Bug fixes consuming data; refactored code to separate implementation specific files

0.2.0 Handlers returning #f now don't generate responses (instead of "null" as before). Fix json-rpc-read

0.1.1 Expose invalid-request error type

0.1 Initial version.