2.2.1

• Fix treatment of NULLs inside arrays. For example, now you can use array_agg on a nullable column.

• New derived instances for PostgresConf: Read, Data and Typeable.

• New mockMigration function. Works like printMigration but doesn't need a database connection.

• Fix typo on error message of the FromJSON instance of PostgresConf.

2.2

• Optimize the insertMany function to insert all rows and retrieve their keys in one SQL query. #407

2.1.6

• Postgresql exceptions #353

2.1.5.3

Migrations for custom primary keys

2.1.5.2

Support foreign key references to composite primary keys #389

2.1.5

• Allow timestamp value in database to be serialized (presumes UTC timezone) Yesod #391

2.1.4

• Treat unknown extension types as PersistDbSpecific values #385

2.1.3

• Added a Show instance for PostgresConf.
• createPostgresqlPoolModified added, see relevant mailing list discussion

2.1.2.1

Documentation typo fix

2.1.1

Added FromJSON instance for PostgresConf.