v2.1.6

What's Changed

• Explain CS vs SA pre-period discrepancy in Tutorial 02 by @igerber in #102
• Fix 10 API discrepancies in quickstart.rst by @igerber in #103
• Include reference period (e=-1) in CS event study for universal base period by @igerber in #104
• Add comprehensive methodology verification tests for CallawaySantAnna by @igerber in #105
• Update REGISTRY.md with verified DifferenceInDifferences behavior by @igerber in #106
• Bump version to 2.1.6 by @igerber in #107

Full Changelog: v2.1.5...v2.1.6

v2.1.5

What's Changed

• Add methodology workflow checklist to CLAUDE.md by @igerber in #96
• Add base_period parameter to CallawaySantAnna for pre-treatment effects by @igerber in #97
• Add pre-merge-check skill and improve PR review workflow by @igerber in #98
• Update Tutorial 02: Add pre-trends section and fix DGP usage by @igerber in #99
• Add METHODOLOGY_REVIEW.md for tracking estimator review progress by @igerber in #100
• Bump version to 2.1.5 by @igerber in #101

Full Changelog: v2.1.4...v2.1.5

v2.1.4

What's Changed

• Add methodology registry and AI-powered PR review workflow by @igerber in #86
• Refactor staggered.py into multiple modules using mixins by @igerber in #88
• Add /submit-pr skill for automated PR creation by @igerber in #89
• Improve AI PR review workflow with inline comment support and security fixes by @igerber in #90
• Fix rank-deficient matrix handling in OLS solver by @igerber in #91
• Add development checklists and workflow improvements to CLAUDE.md by @igerber in #92
• Release v2.1.4 by @igerber in #93

Full Changelog: v2.1.3...v2.1.4

v2.1.3

What's Changed

• Update TODO.md with tech debt assessment findings by @igerber in #83
• Fix/trop paper conformance by @igerber in #84
• Bump version to 2.1.3 by @igerber in #85

Full Changelog: v2.1.2...v2.1.3

v2.1.2

What's Changed

• Add DGP functions to prep.py for all supported DiD designs by @igerber in #80

Full Changelog: v2.1.1...v2.1.2

v2.1.1

What's Changed

• Fix tutorial notebook validation errors and add pre_periods parameter by @igerber in #74
• Optimize TROP estimator performance with vectorized operations by @igerber in #76
• Add Rust backend acceleration for TROP estimator by @igerber in #77

Full Changelog: v2.1.0...v2.1.1

v2.1.0

What's Changed

• Fix errors in real world examples notebook by @igerber in #70
• Update benchmark documentation with v2.0.3 performance results by @igerber in #71
• Add TROP estimator by @igerber in #72

Full Changelog: v2.0.4...v2.1.0

v2.0.4

What's Changed

• Add real-world data examples to documentation by @igerber in #68

Full Changelog: v2.0.3...v2.0.4

v2.0.3

What's Changed

• Optimize CallawaySantAnna WIF computation with vectorized NumPy operations by @igerber in #65
• Add LinearRegression helper class for unified coefficient inference by @igerber in #66
• Rust backend optimizations by @igerber in #67

Full Changelog: v2.0.2...v2.0.3

v2.0.2

What's Changed

• Improve se accuracy wif by @igerber in #63
• Prepare v2.0.2 release: SE accuracy improvements by @igerber in #64

Full Changelog: v2.0.1...v2.0.2