The road to devlog version 3.0 has been long and bumpy indeed. Years ago Fabien Udriot started a brand new version for TYPO3 4.5, using ExtJS for the backend module. The work was never finished and ExtJS fell from grace. The project lay dormant for a couple of years. Then an attempt was made to base the devlog on TYPO3's logging API, but this also faltered along the way.
About last year I finally found the motivation to give the project yet another fresh start. Alternating sprints and breaks, the new version was eventually ready. It is entirely rewritten, with a squeaky clean code base. The backend module relies on jQuery and DataTables for paginating, searching and filtering. The "Clear log entries" feature is now available from a convenient drop-down.
The devlog also now uses a concept of log writers, which makes it possible to route devlog calls to different outputs/storages. By default, the extension provides a database and a file writer.
Last but not least, I moved the extension to GitHub. Hopefully this will help people contribute and maybe also shift ownership to someone else, as I don't feel like continuing to maintain this extension. New home: https://github.com/fsuter/devlog