4.0.0

Now using Python 3.8-3.12, PyQt5, and PyDM. Documentation on GitHub Pages.

What's Changed

• LGTM automated code review by @prjemian in #21
• resolve LGTM alerts by @prjemian in #23
• upgrade to Python3 and modern project by @prjemian in #24

Full Changelog: 3.2.8...4.0.0