Doctrine requirement needs update

[dbykadorov]

Hello! Can you update Doctrine requirements? Something like ">=2.2.*" or similar. With current requirement i can't install the bundle on the Symfony 2.1.3-DEV

composer update lyra/content-bundle
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for lyra/content-bundle dev-master -> satisfiable by lyra/content-bundle dev-master.
    - Conclusion: remove doctrine/orm 2.3.x-dev
    - lyra/content-bundle dev-master requires doctrine/orm 2.2.* -> satisfiable by doctrine/orm 2.2.0-BETA1, doctrine/orm 2.2.0, doctrine/orm 2.2.0-BETA2, doctrine/orm 2.2.0-RC1, doctrine/orm 2.2.1, doctrine/orm 2.2.2, doctrine/orm 2.2.3, doctrine/orm 2.2.x-dev.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.0-BETA1.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.0.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.0-BETA2.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.0-RC1.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.1.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.2.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.3.
    - Can only install one of: doctrine/orm 2.3.x-dev, doctrine/orm 2.2.x-dev.
    - Installation request for doctrine/orm == 2.3.9999999.9999999-dev -> satisfiable by doctrine/orm 2.3.x-dev.

Thanks!