Main changes:
- improved write support (block allocation bitmap checking and rebuilding)
- new unified api for all devices, allowing to implement new device drivers in client code
- possibility to enable/disable device drivers
- added a new device: ramdisk
- improved and better tested salvage code (still experimental!)
- cleaned-up and improved library API (ie. separated namespace)
- added new command-line utilities:
adf_bitmap,adf_salvage - many bugfixes and internal improvements
- dual license (GPL-2+ or LGPL2.1+)