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Release v2.1.4#93

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igerber merged 1 commit intomainfrom
release/v2.1.4
Jan 20, 2026
Merged

Release v2.1.4#93
igerber merged 1 commit intomainfrom
release/v2.1.4

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@igerber igerber commented Jan 20, 2026

Summary

  • Bump version to 2.1.4 in all locations (__init__.py, pyproject.toml, rust/Cargo.toml)
  • Add CHANGELOG entry for v2.1.4 with comparison link

Release Highlights

Added

  • Development checklists and workflow improvements in CLAUDE.md
  • R-style rank deficiency handling across all estimators with rank_deficient_action parameter

Fixed

  • get_params() now includes rank_deficient_action parameter (fixes sklearn cloning)
  • NaN vcov fallback in Rust backend for rank-deficient matrices
  • MultiPeriodDiD vcov/df computation for rank-deficient designs

Changed

  • Rank tolerance aligned with R's lm() default

Methodology references (required if estimator / math changes)

  • Method name(s): N/A - version bump only (methodology changes were in previous commits)
  • Paper / source link(s): N/A
  • Any intentional deviations from the source (and why): N/A

Validation

Security / privacy

  • Confirm no secrets/PII in this PR: Yes

Generated with Claude Code

@igerber @claude
Bump version to 2.1.4
065a8c9 
Updates version in all locations:
- diff_diff/__init__.py
- pyproject.toml
- rust/Cargo.toml
- CHANGELOG.md (new entry with comparison link)

Release includes:
- R-style rank deficiency handling across all estimators
- Development checklists and workflow improvements in CLAUDE.md
- get_params() fix for rank_deficient_action parameter
- NaN vcov fallback in Rust backend

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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github-actions bot commented Jan 20, 2026

Methodology

  • No findings. No estimator/math/variance/assumption changes in this diff, so registry/paper cross-checks are not applicable.

Code Quality

  • No findings.

Performance

  • No findings.

Maintainability

  • No findings.

Tech Debt

  • No findings.

Security

  • No findings.

Documentation/Tests

  • No findings.

Questions/Assumptions

  • Assumption: the methodology changes described in the 2.1.4 changelog are already present in the codebase; this PR is only the release bump.

Overall assessment: ✅ Looks good

Executive Summary

  • No code changes; version bumped to 2.1.4 in diff_diff/__init__.py#L139, pyproject.toml#L7, rust/Cargo.toml#L3.
  • Changelog updated with the 2.1.4 entry and comparison link in CHANGELOG.md#L8 and CHANGELOG.md#L495.
  • Residual risk/testing gap: this PR doesn’t add or modify tests; rely on existing CI coverage for the features referenced in the release notes.

@igerber igerber merged commit ff10253 into main Jan 20, 2026
5 checks passed
@igerber igerber deleted the release/v2.1.4 branch January 20, 2026 23:57
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@igerber