- Separated out configuration options from ff.h to ffconf.h.
- Added a configuration option, _LFN_UNICODE.
- Fixed f_unlink() fails to remove a sub-dir on _FS_RPATH.
- Fixed name matching error on the 13 char boundary.
- Changed f_readdir() to return the SFN with always upper case on non-LFN cfg.
- Added f_truncate().
- Added f_utime().
- Fixed off by one error at FAT sub-type determination.
- Fixed btr in f_read() can be mistruncated.
- Fixed cached sector is not flushed when create and close without write.
