Add support for optimized contains
Add UPGRADE note
Add missing typehint
Remove useless docblock
Remove extra phpdoc
Remove BC notice
Enforce Criteria
Add documentation for the `HIDDEN` keyword in DQL
Add failing test for DDC-3160
Drop Unicode character

It broke the LaTeX build.
Merge pull request #1058 from DavidPrevot/Unicode

Drop Unicode character
fix spacing for yaml example
Merge pull request #1059 from iampersistent/patch-3

fix spacing for yaml example
Create DDC3170Test.php

Added test for [DDC-3170] (http://www.doctrine-project.org/jira/browse/DDC-3170)
Fixed mapping of discriminator column

Added fix for [DDC-3170] (http://www.doctrine-project.org/jira/browse/DDC-3170).

When querying a simple entity which uses single table- or class table inheritance using simple object hydration (``AbstractQuery::HYDRATE_SIMPLEOBJECT``), the mapped discriminator column was not retrieved correctly.

If the column got an alias during result set mapping other than it's actual name (e.g. ``type34`` insteaad of ``type``) than this alias wasn't reverted when retrieving the discriminator column from the SQL result set.
Merge pull request #1060 from ureimers/master

[DDC-3170] SimpleObjectHydrator fails to get discriminator column from mapped SQL result
singularize variable name on add/remove methods for EntityGenerator
remove on-update from join-column
Merge pull request #1064 from stefanotorresi/update-xsd

remove on-update from join-column
Minor CS fixes (`use` statements compliant with PSR-2)