Changes in the versions:

2.3a
 - Minor changes, about 5% speed-up. Documentation is improved. 

2.3
 - Pentium II optimized (2 times faster), CPU type identification,
   -5, -6 options added. PCL updated, including printing password
   in hex and "not defined .c(1)" bug fixed (thanks to Jan Polonsky).
   -v option improved.

2.2
 - stored files support added. Linux (ELF) executable file added -
maybe 5-10% faster.

2.1a
  - "5th line" bug in PCL 2.0 fixed. Only password definitions
greather than 4 lines have been affected. Thanks to Dmitry Lisiy.

2.1
  - PCL v. 2.0 added. Thus, appeared: support of different languages
and encodings, charset definition, new modifiers and their parameters,
timing and benchmarking functions, maximal password length is
now 255.


2.0
   - Password indication added (about 1 of 200000). Multimedia
compressed files (-mm) bug fixed.

1.99
    - RAR 2.0 support is finally included. Older RAR versions are
not supported.

1.5a
     - Library Password Cracking Library (PCL) v. 1.1 added,  al-
lowing  multifunctional  dictionary  attacks,  brute force attack
with known  symbols, recovery  of the  incorrectly typed password
and much more. An error,  in connection with small (less  than 10
bytes)  files,  is  corrected.  Documentation is complemented and
corrected.

1.02
     - Error, causing the result faulty in 0.5 % of the cases, is
corrected. The speed is increased by 5 %.

1.01
    - Insignificant  error  in  an  initial code  UNRAR 1.01 (see
what's new in RAR 2.0) is corrected

1.00:
    - First version released.