MediaGoblin 0.5 released

Version 0.5 of MediaGoblin is now available. This release takes initial steps toward true network federation by supporting the pump.io flavor of OAuth, and it adds support for logins using OpenID or Mozilla Persona. Also new are notifications of new comments, comment previews, and Unicode filename support. Finally, starting with this release, all media types and authentication schemes are supported via plugins, which should make the system easier to extend.