No, that is very much a work in progress, we're busy converting the framework to PSR-4, and into a situation where we can update it without breaking to much.
When this is ready it will probably be moved to "master" which is the standard branch to be used, and released as 1.9.0.
As of now, it already requires:
- all filenames and classnames to be changed to conform to PSR-4 (no more underscores)
- all modules and packages to be converted to a composer/PSR-4 compliant setup
We'll produce a migration document by the time it is ready for a release.