Version 1.0.0, released 2012-12-25
  - initial release

Version 1.0.1, released 2015-01-23
  - fix build on PostgreSQL 9.3+

Version 1.0.2, released 2015-08-02
  - first stable release

Version 1.1.0, released 2016-06-12
  - user-defined system time