Versions for components have three elements: x.y.z, which have the following meaning: *x*: major version number. A component with major version 0 can never be released publically (beta). It will only increase when there is a backwards compatible break in the component's API. *y*: minor version number, is used for all feature additions. *z*: mini version number, is used to denote bugfixes only. This third part can also be a string in the set: (alpha, beta1, beta2, beta~N~, rc1, rc2, rc~N~). *x* and *y* show the version number of the component, the *z* is an addition showing the state (beta etc) or which bugfix release it is.