Pheanstalk v0.9.0 Pheanstalk has been actively developed and used in production by many since 2008, but has never been formally versioned. As the initial version 0.x.x development phase moves towards a stable 1.0.0 release, Pheanstalk will be tagged and versioned based on Semantic Versioning: http://semver.org/ DEPRECATED METHODS WILL BE REMOVED in the following 1.0.0 release.