Update ruby-sequel to 3.36.0.

=== 3.36.0 (2012-06-01)

* Use Bignum generic type when dumping unsigned integer types that could potentially overflow 32-bit signed integer values (stu314)

* Support :transform option in the nested_attributes plugin, for automatically preprocessing input hashes (chanks)

* Support :unmatched_pk option in the nested_attributes plugin, can be set to :create for associated objects with natural keys (chanks)

* Support composite primary keys in the nested_attributes plugin (chanks)

* Allow Model#from_json in the json_serializer plugin to use set_fields if a :fields option is given (jeremyevans)

* Support :using option to set_column_type on PostgreSQL, to force a specific conversion from the old value to the new value (jeremyevans)

* Drop indexes in the reverse order that they were added in the schema dumper (jeremyevans)

* Add :index_names option to schema dumper method, can be set to false or :namespace (stu314, jeremyevans)

* Add Database#global_index_namespace? for checking if index namespace is global or per table (jeremyevans)

* Fix typecasting of time columns on jdbc/postgres, before could be off by a millisecond (jeremyevans)

* Add document explaining Sequel's object model (jeremyevans)

* Attempt to detect more disconnect errors in the mysql2 adapter (jeremyevans)

* Add is_current? and check_current to the migrators, for checking/raising if there are unapplied migrations (pvh, jeremyevans) (#487)

* Add a jdbc subadapter for the Progress database (Michael Gliwinski, jeremyevans)

* Add pg_inet extension, for working with PostgreSQL inet and cidr types (jeremyevans)

* Fix bug in model column setters when passing an object that raises an exception for ==('') (jeremyevans)

* Add eager_each plugin, which makes each on an eagerly loaded dataset do eager loading (jeremyevans)

* Fix bugs when parsing foreign keys for tables with explicit schema on PostgreSQL (jeremyevans)

* Remove Database#case_sensitive_like on SQLite (jeremyevans)

* Remove Database#single_value in the native sqlite adapter (jeremyevans)

* Make Dataset#get work with nil and false arguments (jeremyevans)

* Make json_serializer plugin respect :root=>:collection and :root=>:instance options (jeremyevans)

* Support savepoints in prepared transactions on MySQL 5.5.23+ (jeremyevans)

* Add pg_json extension, for working with PostgreSQL 9.2's new json type (jeremyevans)

* In the optimistic locking plugin, make refresh and save after a failed save work correctly (jeremyevans)

* Support partial indexes on Microsoft SQL Server 2008 (jeremyevans)

* Make Database#call pass blocks (jeremyevans)

* Support :each when preparing statements, useful for iterating over large datasets (jeremyevans)

* Support :if_exists and :cascade options when dropping indexes on PostgreSQL (jeremyevans)

* Support :concurrently option when adding and dropping indexes on PostgreSQL (jeremyevans)

* Make Database#transaction on PostgreSQL recognize :synchronous, :read_only, and :deferrable options (jeremyevans)

* Support :sql_mode option when connecting to MySQL (jeremyevans)

* Apply :timeout MySQL connection setting on do, jdbc, and swift adapters (jeremyevans)

* Don't set Sequel::Model.db automatically when creating an anonymous class with an associated database object (jeremyevans)

* Add :connection_handling=>:queue option to the threaded connection pools, may reduce chance of stale connections (jeremyevans) (#481)

* Handle JRuby 1.7 exception handling changes when connecting in the jdbc adapter (jeremyevans) (#477)

* Make *_to_one association setters be noops if you pass a value that is the same as the cached value (jeremyevans)

* Make Model#refresh return self when using dirty plugin (jeremyevans)

(taca)