release: v0.2.0

Version 0.2.0 includes production audit fixes with multiple numerical
corrections. See CHANGELOG.md for full details.

Key numerical changes:
- ts_product: now handles negative values correctly
- ts_covariance: aligned to ddof=1 (sample) matching ts_corr
- divide/inverse: explicit zero-division guards

Author: quantbai

CHANGELOG.md

@@ -7,9 +7,12 @@ Numerical changes are marked with [NUMERICAL].
 
 ## [Unreleased]
 
+## [0.2.0] - 2026-03-23
+
 ### Added
-- CLAUDE.md development standards
+- CLAUDE.md development standards (12 sections covering full workflow)
 - CI pipeline (GitHub Actions, pytest across Python 3.10-3.13)
+- Automated release pipeline (tag-triggered PyPI publish + GitHub Release)
 - Pre-commit hooks (ruff lint + format, pytest)
 - PR template with numerical impact checklist
 - Dev dependencies (pytest, ruff, pre-commit)

elvers/__init__.py

@@ -7,7 +7,7 @@
 Author: quantbai
 """
 
-__version__ = "0.1.1"
+__version__ = "0.2.0"
 __author__ = "quantbai"
 
 from .core import Factor