# ChangeLog

All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.

## [4.0.6] - 2024-03-02

### Changed

- Do not use implicitly nullable parameters

## [4.0.5] - 2023-05-07

### Changed

- [#118](https://github.com/sebastianbergmann/diff/pull/118): Improve performance of `MemoryEfficientLongestCommonSubsequenceCalculator`
- [#119](https://github.com/sebastianbergmann/diff/pull/119): Improve performance of `TimeEfficientLongestCommonSubsequenceCalculator`

## [4.0.4] - 2020-10-26

### Fixed

- `SebastianBergmann\Diff\Exception` now correctly extends `\Throwable`

## [4.0.3] - 2020-09-28

### Changed

- Changed PHP version constraint in `composer.json` from `^7.3 || ^8.0` to `>=7.3`

## [4.0.2] - 2020-06-30

### Added

- This component is now supported on PHP 8

## [4.0.1] - 2020-05-08

### Fixed

- [#99](https://github.com/sebastianbergmann/diff/pull/99): Regression in unified diff output of identical strings

## [4.0.0] - 2020-02-07

### Removed

- Removed support for PHP 7.1 and PHP 7.2

## [3.0.2] - 2019-02-04

### Changed

- `Chunk::setLines()` now ensures that the `$lines` array only contains `Line` objects

## [3.0.1] - 2018-06-10

### Fixed

- Removed `"minimum-stability": "dev",` from `composer.json`

## [3.0.0] - 2018-02-01

- The `StrictUnifiedDiffOutputBuilder` implementation of the `DiffOutputBuilderInterface` was added

### Changed

- The default `DiffOutputBuilderInterface` implementation now generates context lines (unchanged lines)

### Removed

- Removed support for PHP 7.0

### Fixed

- [#70](https://github.com/sebastianbergmann/diff/issues/70): Diffing of arrays no longer works

## [2.0.1] - 2017-08-03

### Fixed

- [#66](https://github.com/sebastianbergmann/diff/pull/66): Restored backwards compatibility for PHPUnit 6.1.4, 6.2.0, 6.2.1, 6.2.2, and 6.2.3

## [2.0.0] - 2017-07-11 [YANKED]

### Added

- [#64](https://github.com/sebastianbergmann/diff/pull/64): Show line numbers for chunks of a diff

### Removed

- This component is no longer supported on PHP 5.6

[4.0.6]: https://github.com/sebastianbergmann/diff/compare/4.0.5...4.0.6
[4.0.5]: https://github.com/sebastianbergmann/diff/compare/4.0.4...4.0.5
[4.0.4]: https://github.com/sebastianbergmann/diff/compare/4.0.3...4.0.4
[4.0.3]: https://github.com/sebastianbergmann/diff/compare/4.0.2...4.0.3
[4.0.2]: https://github.com/sebastianbergmann/diff/compare/4.0.1...4.0.2
[4.0.1]: https://github.com/sebastianbergmann/diff/compare/4.0.0...4.0.1
[4.0.0]: https://github.com/sebastianbergmann/diff/compare/3.0.2...4.0.0
[3.0.2]: https://github.com/sebastianbergmann/diff/compare/3.0.1...3.0.2
[3.0.1]: https://github.com/sebastianbergmann/diff/compare/3.0.0...3.0.1
[3.0.0]: https://github.com/sebastianbergmann/diff/compare/2.0...3.0.0
[2.0.1]: https://github.com/sebastianbergmann/diff/compare/c341c98ce083db77f896a0aa64f5ee7652915970...2.0.1
[2.0.0]: https://github.com/sebastianbergmann/diff/compare/1.4...c341c98ce083db77f896a0aa64f5ee7652915970