Fixes in this release:
- Fix incorrect size calcation for Unicode characters (#654)
- Fix binding of 32-bit ints on 64-bit Linux (#611)
- Fixes type mismatch for null/None with table value parameters. #596
- Fixes and cleanup of unit tests for MS Access (#606), MySQL (#630 #632) and new tests (#637 #645)
Many thanks to everyone who provided these fixes. Merry Christmas.