Log Message:
p5-DBD-postgresql: update to 3.7.0.

Version 3.7.0  Released September 24, 2017 (git tag 3.7.0)

  - If no placeholders, use PQexec instead of PQexecParams
    [Greg Sabino Mullane]

  - Fix running tests with non-UTF8 server_encoding
    [Dagfinn Ilmari Mannsåker]
    (Github issue #26)

  - Fix crash with missing client_encoding
    [David Christensen, reported by Marko Tiikkaja]
    (Github issue #29)

  - Fix crash with missing server_version
    [David Christensen]

  - Fix leak in ->state methods
    [Dagfinn Ilmari Mannsåker]
    (Github issue #30)

  - Add $sth->{pg_async_status} to determine async status of a statement handle.
    Values can be 0 (no async), 1 (async), or -1 (cancelled)
    [Greg Sabino Mullane, as requested by Dmytro Zagashev (ZDM)]
    (CPAN ticket #116172)