Version 1.21.0 (2020-02-25):
* Advance to version 22.0 of the stable C++ Toolkit components, with
  FreeTDS 1.0 ("ftds100") now the default "ftds" and 0.95 ("ftds95")
  still available by explicit request (but 0.64 ["ftds64"] gone).
* Update Python version coverage, substituting 3.8 for 2.7 (and
  keeping 3.6 and 3.7).

Version 1.20.1 (2019-07-12):
* Clean up a stray dependency on libconnect.so.

Version 1.20.0 (2019-07-11):
* Advance to version 22.0 of the stable C++ Toolkit components and GCC 7.3,
  with FreeTDS 1.0 (ftds100) available by explicit request.
* Modernize Python version coverage, substituting 3.6 and 3.7 for 3.4
  (and keeping 2.7 for now).
* Fix AttributeError reporting under Python 3.

Version 1.19.4 (2018-02-05):
* Work around a Python limitation that could lead to crashes at exit.

Version 1.19.3 (2017-11-20):
* Properly distinguish text and binary values for the sake of Python 3
  users and Python 2 users who've explicitly opted into Unicode.

Version 1.19.2 (2017-09-06):
* Fix Python type object initialization code, addressing bogus
  reported type names and more possible Python 3 crashes.

Version 1.19.1 (2017-09-05):
* Avoid crashing at exit under Python 3.

Version 1.19.0 (2017-08-31):
* Advance to version 20.0 of the stable C++ Toolkit components, with
  mbed TLS favored over GNUTLS but the latter kept around for
  compatibility (linked statically, as before).
* Log via the standard Python logging module.

Version 1.18.0 (2016-10-13):
* Advance to version 18.0 of the stable C++ Toolkit components, with
  ftds95 as default ftds and support for contacting dispd over HTTPS.

Version 1.17.0 (2016-06-23):
* Advance to version 17.0 of the stable C++ Toolkit components, complete
  with an ftds95 driver in addition to ftds(64).

Version 1.16.1 (2016-01-15):
* Cover Python 3.4 in addition to 2.7.

Version 1.16.0 (2015-09-22):
* Advance to version 16.1 of the stable C++ Toolkit components, and
  GCC 4.8.1.

Version 1.15.2 (2015-09-21):
* Produce wheels for decentralized installation, not tarballs for
  centralized installation.

Version 1.15.1 (2013-02-06):
* Rework exception translation to follow PEP 249 more closely.

Version 1.15.0 (2012-11-09):
* Optionally release Python's global interpreter lock around blocking
  DBAPI calls.
* Advance to version 11.0 of the stable C++ Toolkit components.

Version 1.14.0 (2012-09-04):
* Improve thread safety.
* Build against stable C++ Toolkit components (version 10.1 at present).

Version 1.13.3 (2012-03-16):
* Make compatible with Python 2.7.

Version 1.13.2 (2012-02-13):
* Restore support for passing fractional seconds, accidentally lost earlier.

Version 1.13.1 (2011-10-06):
* Bug fixes for 1.13.0, notably addressing a memory leak.

Version 1.13.0 (2011-10-04):
* Allow cursor, connection, and transaction objects to work as "with"
  statement context managers/guards.
* Further extend cursors to support iteration and properly advertise
  description and row count metadata.
* Force use of compatible support libraries, regardless of LD_LIBRARY_PATH.

Version 1.12.6 (2010-05-14):
* Permit calling stored procedures whose names start with SQL verbs.

Version 1.12.5 (2010-04-22):
* Ensure correct output types even when filling in NULLs.
* Properly report error text from stored procedures.

Version 1.12.4 (2010-02-25):
* Optionally return all strings as unicode objects.

Version 1.12.3 (2010-02-12):
* Support Python datetime and unicode objects.
* Allow binding by position (to tuples and lists, not just dictionaries).
* Support Sybase stored procedures with numeric output parameters.

Version 1.12.2 (2009-02-27):
* Support connecting to Sybase OpenServer instances.

Version 1.12.1 (2009-02-25):
* Support mirror pairs whose primary side can switch back and forth.

Version 1.12.0 (2009-01-08):
* Initial release using a release procedure.
* Don't raise exceptions for info-level messages from the server.
* Recognize stored procedures' return codes even when no row result sets
  precede them.
* Supply cursor.description metadata.

Version 1.11.0 (2008-09-03):
* Support passing driver-specific parameters, such as text encoding.
* Handle server-side errors gracefully, and make specific details available.

Version 1.10.0 (2008-08-06):
* Update per changes to the C++ Toolkit's exception-handling framework.

Version 1.9.0 (2008-06-10):
* Map Python None objects to SQL NULLs.

Version 1.8.0 (2008-06-04):
* Introduce a dbapi.Binary constructor for IMAGE fields.

Version 1.7.0 (2008-06-02):
* Retrieve stored procedures' output parameters (caching row results to do so).
* Translate C++ exceptions into Python errors.

Version 1.6.0 (2008-02-08):
* Describe SQL statement input and output parameters.

Version 1.5.1 (2007-10-25):
* Fix builds against Python 2.4 on 64-bit platforms.

Version 1.5 (2007-10-17):
* First internal production release.
