15.1.0+dune

CHANGES:

• Unicode 15.1.0 support.
• Requires OCaml 4.14.0.
• The Uunf_string module was rewritten to use the standard library
  UTF decoders and was moved to the uunf library. The uunf.string
  library is deprecated, it warns on usage and simply requires uunf.
• The sample code was rewritten to use the standard library UTF
  decoders.

15.0.0+dune

CHANGES:

• Unicode 15.0.0 support.