Milestone 1.3

The 1.3 milestone includes a number of bug fixes and the following new features:

• Propel now uses PDO (instead of Creole) for database API
• Support for DateTime object and correct handling of pre-/post- epoch dates
• New nested-set implementation
• Propel now stores & maps object instances to ensure that only one object instance represents a given database row.
• New 1:1 relationship support
• Table and class prefix options
• Ability to specify custom method names for FKEY relationships
• Ability to use expressions as default values (e.g. CURRENT_TIMESTAMP)
• Customizable PHP and SQL type mapping on a per-column basis