Add 1.5.2 changelog
Add 1.5.2 changelog

doctrine/DoctrineBundle,fabpot/DoctrineBundle,javiereguiluz/DoctrineBundle,mikeSimonson/DoctrineBundle,hacfi/DoctrineBundle,OskarStark/DoctrineBundle,javiereguiluz/DoctrineBundle,gencer/DoctrineBundle,hacfi/DoctrineBundle,gencer/DoctrineBundle,OskarStark/DoctrineBundle,mikeSimonson/DoctrineBundle,fabpot/DoctrineBundle,fervo/DoctrineBundle,nicolas-grekas/DoctrineBundle,hason/DoctrineBundle,fervo/DoctrineBundle,nicolas-grekas/DoctrineBundle,hason/DoctrineBundle