Suvtools

**Full Changelog**: https://github.com/pranabdas/suvtools/compare/v1.1.1...v1.1.2

**Full Changelog**: https://github.com/pranabdas/suvtools/compare/v1.1.0...v1.1.1

What's Changed
* update project dependencies (requires python 3.10 or above) by pranabdas in https://github.com/pranabdas/suvtools/pull/3


**Full Changelog**: https://github.com/pranabdas/suvtools/compare/v1.0.2...v1.1.0

Republish `1.0.0`.

Reorganize project as module, and publish package via PyPI.

Fix a bug in `norm_bg` routine (thanks to cennanaradipa for reporting the problem).