This version is a complete rewrite. Though there are lots of breaking changes most features of v1 are retained. Notable new functions:
- filesystem abstraction: associated files can be stored on any filesystem Laravel 5's filesystem allows. So you could for instance store everything on S3.
- thumbnails can now be generated for pdf files
- registering conversions has been made more intuïtive
- it's now very easy to add custom logic to generate urls
- images can be manipulated per media object.