1.4.0-rc.0

@pavoljuhas

What's Changed

Improve pair mask handling by @pavoljuhas in #19
Fix Atom attributes crash on numpy int values by @pavoljuhas in #20
Fix at-exit cleanup to avoid the GIL error by @pavoljuhas in #28
Replace SCon with modern build tools, rewrite setup.py and add pyproject.toml by @Tieqiong in #36
black autofix by @Tieqiong in #37
Add precommit by @Tieqiong in #38
add PR test workflow and issue templates by @Tieqiong in #39
refactor: move tests and fix pytest by @Tieqiong in #46
fix: py3.11 can't find boost by @Tieqiong in #44
fix: complete dependencies by @Tieqiong in #45
Refactor: Cookiecut (merge the other ones first) by @Tieqiong in #47
add: srreal windows support by @Tieqiong in #53
skpkg: pre-commit auto fixes by @cadenmyers13 in #55
fix: find objcryst by @Tieqiong in #56
skpkg: pre-commit auto fixes with line length of 79 by @cadenmyers13 in #57
skpkg: final skpkg migration of files by @cadenmyers13 in #58
skpkg: final step, merge branch cookie into main by @cadenmyers13 in #59
clean requirements by @Tieqiong in #61

Full Changelog: v1.3.0...1.4.0-rc.0