Add a parameter version to Dblib.connect to be able to choose the protocol version. Explain how the old protocol versions do not allow empty strings which will be returned as ' '.
Keep the compatibility with FreeTDS version < 0.91.
Keep int64 as such on the OCaml side (they used to be transformed into strings).
Document Dblib.severity.
Make error messages more informative by splicing the binding on a finer level. A configure script ensures the synchronization with values defined in the C header files.
Add tests for Dblib and Ct (checked by AppVeyor on Windows/mingw).
Improve the interface of Ct.get_messages.
Complete the depexts list.
0.5.2 2018-04-15
Better error messages (commits #94134f7 and #bdc2c99)