Update year in copyright.
Update ChangeLog.
Update release to 2.3
Two new reports: VACUUM/ANALYZE per table
New autovacuum hourly report and its graph
Fix strange issue with Perl 5.16 that do not allow "ss"  inside look-behind assertions. Thanks to Cedric for the report.
Merge pull request #56 from gleu/autovacuum

Autovacuum
Fix major bug on syslog parser where years part of the date was wrongly extracted from current date with logs generated in 2012.
Add report of tuples/pages removed in report of Vacuums by table.