# Changes to CSS Tokenizer

### 2.3.1

_May 4, 2024_

- Fix escaping for the last code point in an ident sequence.

### 2.3.0

_May 4, 2024_

- Add `mutateUnit` helper function
- Add type guard helpers

### 2.2.4

_March 13, 2024_

- Correctly tokenize negative zero `-0` (for real this time)

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer/CHANGELOG.md)