Xml driver should return options for custom id generator
Merge pull request #673 from Begi/custom-idgen-xml

Xml driver should return options for custom id generator
Performance tweaks.
Merge pull request #652 from doctrine/fix/performance-tweaks

Fix/performance tweaks
Using true boolean and integer types for annotations instead of string "values"
Merge pull request #676 from holtkamp/patch-1

Using true boolean and integer types for annotations instead of string "...
Updated setup instructions

Added setup step to install dependencies with composer and updated directory locations.
Updated annotation reader instructions for example bootstrap
Rewrite setup instructions (using Composer and sandbox bootstrap.php)
Removed unused variables in PersistenceBuilder
Merge pull request #677
Fix monospace formatting for set strategy
Link to Collection Strategies page in docs index
Revert "Performance tweaks."

This reverts commit e4310f03115501bc42d2040e1b48ba48976a571e.
Merge pull request #688 from doctrine/revert-performance-tweaks

Revert "Performance tweaks."
use base lifecycle event
Depend on doctrine/common 2.4.x and related libs
Refactor event classes to extend common base classes

OnClearEventArgs and ManagerEventArgs can extend their common base classes.

preLoad is a lifecycle event, so PreLoadEventArgs should extend LifecycleEventArgs.
Merge pull request #459
Fix infinite loop in unit of work on bidirectional references with discriminator maps