=== 3.42.0 (2012-12-03)
* If an exception occurs while committing a transaction, attempt to rollback (jeremyevans)
* Support setting default string column sizes on a per-Database basis via default_string_column_size (jeremyevans)
* Reset Model.instance_dataset when extending the model's dataset (jeremyevans)
* Make the force_encoding plugin work with frozen strings (jeremyevans)
* Add Database#do on PostgreSQL for using the DO anonymous code block execution statement (jeremyevans)
* Remove Model.dataset_methods (jeremyevans)
* Allow subset to be called inside a dataset_module block (jeremyevans)
* Make Dataset#avg, #interval, #min, #max, #range, and #sum accept virtual row blocks (jeremyevans)
* Make Dataset#count use a subselect when the dataset has an offset without a limit (jeremyevans) (#587)
* Dump deferrable status of unique indexes on PostgreSQL (radford) (#583)
* Extend deferrable constraint support to all types of constraints, not just foreign keys (radford, jeremyevans) (#583)
* Support Database#copy_table and #copy_into on jdbc/postgres (bdon) (#580)
* Make Dataset#update not use a limit (TOP) on Microsoft SQL Server 2000 (jeremyevans) (#578)
=== 3.41.0 (2012-11-01)
* Add bin/sequel usage guide (jeremyevans)
* Make Dataset#reverse and #reverse_order accept virtual row blocks (jeremyevans)
* Add Sequel.delay for generic delayed evaluation (jeremyevans)
* Make uniqueness validations correctly handle nil values (jeremyevans)
* Support :unlogged option for create_table on PostgreSQL (JonathanTron) (#575)
* Add ConnectionPool#pool_type to get the type of connection pool in use (jeremyevans)
* Explicitly mark primary keys as NOT NULL on SQLite (jeremyevans)
* Add support for renaming primary key columns on MySQL (jeremyevans)
* Add connection_validator extension for automatically checking connections and transparently handling disconnects (jeremyevans)
* Add Database#valid_connection? for checking whether a given connection is valid (jeremyevans)
* Make dataset.limit(nil, nil) reset offset as well as limit (jeremyevans) (#571)
* Support IMMEDIATE/EXCLUSIVE/DEFERRED transaction modes on SQLite (Eric Wong)
* Major change in the Database <-> ConnectionPool interface (jeremyevans)
* Make touch plugin handle touching of many_*_many associations (jeremyevans)
* Make single_table_inheritance plugin handle non-bijective mappings (hannesg) (#567)
* Support foreign key parsing on MSSQL (munkyboy) (#564)
* Include SQL::AliasMethods in most pg_* extension objects (treydempsey, jeremyevans) (#563)
* Handle failure to create a prepared statement better in the postgres, mysql, and mysql2 adapters (jeremyevans) (#560)
* Treat clob columns as strings instead of blobs (jeremyevans)
=== 3.40.0 (2012-09-26)
* Add a cubrid adapter for accessing CUBRID databases via the cubrid gem (jeremyevans)
* Add a jdbc/cubrid adapter for accessing CUBRID databases via JDBC on JRuby (jeremyevans)
* Return OCI8::CLOB values as ruby Strings in the Oracle adapter (jeremyevans)
* Use clob for String :text=>true types on Oracle, DB2, HSQLDB, and Derby (jeremyevans) (#555)
* Allowing marshalling of Sequel::Postgres::HStore (jeremyevans) (#556)
* Quote channel identifier names when using LISTEN/NOTIFY on PostgreSQL (jeremyevans)
* Handle nil values when formatting bound variable arguments in the pg_row extension (jeremyevans) (#548)
* Handle nil values when parsing composite types in the pg_row extension (jeremyevans) (#548)
* Add :disconnect=>:retry option to Database#transaction, for automatically retrying the transaction on disconnect (jeremyevans)
* Greatly improved support on Microsoft Access (jeremyevans)
* Support Database#{schema,tables,views,indexes,foreign_key_list} when using ado/access adapter (ericgj) (#545, #546)
* Add ado/access adapter for accessing Microsoft Access via the ado adapter (jeremyevans)
* Combine disconnect error detection for mysql and mysql2 adapters (jeremyevans)
* Update the association_pks plugin to handle composite primary keys (chanks, jeremyevans) (#544)
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