This release fixes:

 * some PHP 5.3 compatibility issues that caused the test suite to fail
   for the previous release
 * index renaming for indexes that had particular assigned options, and
   that were being added rather than renamed or recreated under a different
   name
 * `date` and `datetimetz` OracleDB type introspection: these two types
   were incorrectly recognized as `datetime`

Total issues resolved: **4**

- [2508: Renaming index does not rename the index, but creates new one](https://github.com/doctrine/dbal/issues/2508)
- [2555: schema generation maps oracledb `DATE` fields to `datetime`](https://github.com/doctrine/dbal/issues/2555)
- [2611: #2508 Pass through index options when renaming index on table](https://github.com/doctrine/dbal/pull/2611)
- [2612: #2555 Fix `date` and `datetimetz` type mapping on Oracle](https://github.com/doctrine/dbal/pull/2612)