DBAL-132 - Make Table::addUnnamedForeignKeyConstraint() generate a name based on the input, @deprecated addUnnamedForeignKeyConstraint and addNamedForeignKeyConstraint.

DDC-1282 - Remove overprotective casting of days/months to integer, which prevents passing columns as days. The platform is not responsible for escapsing, the DQL parser already does it way before generating the sql statements.

DDC-1271 - Fix date diff in PostgreSQL when timestamps are passed by casting everything into dates explicitly.

DBAL-126 - Fix bug during table diffs when creating new primary keys, unique constraints were created instead.

DBAL-112, DBAL-113 - Implement AbstractPlatform::getAlterSequenceSQL() and fix comparator code for sequences

DDC-887 - Fix problem with MySQL renaming of foreign keys columns. The FK has to be dropped, then column renamed, then readded

Fix bug in DropSchemaSQLCollector dropping tables before sequences which can cause constraint errors