For the full changelog, see https://github.com/lpsmith/postgresql-simple/blob/master/CHANGES.md

Version 0.5.2.1 (2016-06-29)

• Bumped the lower bound for base to 4.6. Thanks to Herbert Valerio Riedel for reporting the issue.

• Added an Eq instance for SqlError, thanks to Chris Allen

• Fixed a bug where a all-caps "NULL" text value inside a postgresql array would get parsed as the SQL null value. Thanks goes to Edgar Gomes and Silk for finding and fixing this mistake.

• Modified withTransaction and friends to ignore IOErrors when attempting to roll back the transaction. This fixes a buggy interaction between withTransaction and async exceptions (e.g. System.Timeout) on unix platforms. Thanks goes to Erik Hesselink and Silk for providing the test case that exposed this issue.

• Added the testTimeout regression test for the problem above.