compatibility updates: python 3.7-3.12

Most of this is styling, type-hinting, CI/CD upgrades. The check for the presence of TeX has been fixed to be much more robust, and many CI tests verified compatibility with mud-examples both with and without TeX present.

What's Changed

• housekeeping by @mathematicalmichael in #71
• dependabot by @mathematicalmichael in #75
• make check for latex more robust by @mathematicalmichael in #74
• correctly handle rc defaults by @mathematicalmichael in #76
• use 3.7-compatible path unlink syntax by @mathematicalmichael in #77

Full Changelog: v0.1post0...v0.1.1