2.0b2 2.0b1 1.6.7-release 1.6.6-release 1.6.5-release 1.6.4-release 1.6.3-release 1.6.2-release 1.6.1-rc1 1.6.0-rc1 1.5.2-release 0.5.2-b1 0.5.1-release 0.5.1-rc1 0.5.0-rc1