= New Features

* On Microsoft SQL Server, the :clustered option is now supported
  for primary key and unique constraints.  You can use a true value
  for CLUSTERED and a false value for NONCLUSTERED.

= Other Improvements

* Partitioned tables are now included in the result of
  Database#tables on PostgreSQL.

* alter_table set_column_allow_null no longer drops the size of
  binary columns on Microsoft SQL Server.

* In the tree plugin, the roots_dataset method now works correctly
  with queries using joins by qualifying the parent column.

* A fork safety guide has been added, discussing fork safety issues
  when using Sequel.