Changelog:
==========
* add 'pyproject.toml'
* implement 'bits2bytes()' in C
* optimize 'delslice()' when 'step' is larger than about 5
* consistently name '*_span()' and '*_range()' in C for
invert, set and count
* organize and add tests
* remove '.endian()' method in favor of data descriptor '.endian'
* allow bitarray initializer 'bytes' or 'bytearray' to set buffer directly
* allow calling '.extend()' with 'bytes' object (although the only
valid bytes are 0x00 and 0x01)
* add 'util.byteswap()'
* add 'util.correspond_all()'
* fix '.reverse()' for imported buffer
* drop Python 3.5 support
* add tests
* fix off-by-one-error in check for length of count argument
in 'util.canonical_decode()'
* simplify 'util.int2ba()'
* add tests
* add [masked indexing example](../examples/masked.py)
* add [tricks example](../examples/tricks.py)
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
