* see Bitarray 3 transition
* remove Python 2.7 support
* .decode() now returns iterator (equivalent to past
.iterdecode())
* .search() now returns iterator (equivalent to past
.itersearch())
* remove .iterdecode() and .itersearch()
* remove util.rindex(), use .index(..., right=1) instead,
deprecated since 2.9
* remove util.make_endian(), use bitarray(..., endian=...)
instead, deprecated since 2.9
* remove hackish support for bitarray() handling unpickling,
see detailed explaination in #207 - closes#206
* add official Python 3.13 support
* update cibuildwheel to 2.21.3
* minor simplifications
* fix some typos
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-bitarray?expand=0&rev=54
