Concordion Version Numbering

[Nigel Charman]

Following on from discussion on the "Concordion PR" post, I've documented the Concordion Version Numbering approach on our wiki.

All Concordion and extension builds that we publish now on, will include additional entries in MANIFEST.MF, with the Specification-Version containing MAJOR.MINOR and the Implementation-Version containing MAJOR.MINOR.PATCH (amongst other additional entries).

I'm quite close to releasing Concordion 2.2.0 now, which contains API changes that break some extensions. We'll release new versions of these extensions. Concordion checks for usage of these extensions, and errors if you try to use an outdated version (see the ExtensionChecker class).

Concordion 2.2.0 also deprecates some API calls used by the embed-extension, excel-extension and screenshot-extension. Concordion will warn you to update the extension versions if you are using an outdated version of these.

Let me know if you have any questions on this?