Massive performance increases and adjusted sandwich fidelity diagnostic suite added

What's Changed

• Closed-form test implementing old manual verification from colab notebook by @nowellclosser in #68
• ADS-140 uv migration by @nowellclosser in #69
• ADS-139 Performance Audit by @nowellclosser in #70
• Ads 141 precommit ruff by @nowellclosser in #71
• ADS-139 Performance Follow-ups by @nowellclosser in #72
• ADS-142 new diagnostics, calibrated diagnostic suite, new bootstrap final interval estimate, diagnostic performance improvements by @nowellclosser in #73
• TODOS swept: deleted, resolved, and turned into Github Issues by @nowellclosser in #77

Full Changelog: v1.3.0...v2.0.0