v0.7 2003-04-09
    - fixed greedy median() for Unicode characters > U+FFFF, it's now usable
      with whatever integer type wchar_t happens to be
    - added missing MANIFEST
    - renamed exported C functions, all public names now have lev_, LEV_ or
      Lev prefix; defined lev_byte, lev_wchar, and otherwise santinized
      the (still unstable) C interface
    - added edit-ops group of functions, with two interfaces: native, useful
      for string averaging, and difflib-like for interoperability
    - added an example SequenceMatcher-like class StringMatcher

v0.6 2003-04-10
    - a segfault in seqratio()/setratio() on invalid input has been fixed
      to an exception
    - optimized ratio() and distance() (about 20%)
    - Levenshtein.h header file was added to make it easier to actually use
      it as a C library

v0.5 2002-12-10
    - a segfault in setratio() was fixed
    - median() handles all empty strings situation more gracefully

v0.4 2002-12-09
    - new functions seqratio() and setratio() computing similarity between
      string sequences and sets
    - Levenshtein optimizations (affects all routines except median())
    - all Sequence objects are accepted, not just Lists

v0.3 2002-12-04
    - setmedian() finding set median was added
    - median() initial overhead for Unicodes was reduced

v0.2 2002-12-03
    - ratio() and distance() now accept both Strings and Unicodes
    - removed uratio() and udistance()
    - Levenshtein.c is now compilable as a C library (with -DNO_PYTHON)
    - a median() function finding approximate weighted median of a string
      set was added

v0.1 2002-11-30
    - Inital release
