* Allow upserting by auto-increment primary key (thanks atandrau https://github.com/seamusabshere/upsert/issues/3)
* Enhancements
* Make setter an optional argument
0.3.3
* Bug fixes
* Properly quote table names - don't assume that everybody has ANSI_QUOTES turned on in MySQL :)
0.3.2
* Enhancements
* Make sure ::PGconn is recognized as ::PG::Connection (thanks joevandyk https://github.com/seamusabshere/upsert/issues/2)
0.3.1
* Bug fixes
* On PostgreSQL, stop nullifying columns that weren't even involved in the upsert * On SQLite, properly join WHERE conditions with ' AND ' instead of ','
0.3.0
* Enhancements
* Remove all the sampling - just keep a cumulative total of sql bytes as we build up an ON DUPLICATE KEY UPDATE query. * Deprecate Upsert.stream in favor of Upsert.batch (but provide an alias for backwards compat)
0.2.2
* Bug fixes
* Correct and simplify how sql length is calculated when batching MySQL upserts.