## [0.2.0] - 2026-04-11
### Fixed
- S2 formula corrected from `2 * sum(w_i²)` to `4 * sum(w_i²)` for symmetric binary weights
- Global variance now subtracts `E(I)²` per the standard randomization formula
- Local Moran's I expected value now uses `-w_i / (n-1)` per cell instead of the global `-1 / (n-1)`
- `coarse_grain/2` now uses the correct axis (1) for column count when computing output width
## [0.1.2] - 2025-10-16
### Added
- Utility for coarse-graining images
## [0.1.1] - 2025-08-21
### Changed
- Minor refactor
## [0.1.0] - 2025-08-12
### Added
- Initial release