2022-05-05  Kjell Ahlstedt  <kjellahlstedt@gmail.com>

  2.72.1

2022-05-04  Kjell Ahlstedt  <kjellahlstedt@gmail.com>

  CI: Accept warnings from clang++

2022-05-04  Kjell Ahlstedt  <kjellahlstedt@gmail.com>

  Revert "ustring_Iterator: Declare the copy constructor =default"

  This reverts commit 7b811a0be824675f31a422d40a75bbb5d10e32ad.
  It broke ABI. See #98