<commit_before># Release notes
All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](http://semver.org/).<commit_msg>Start changelog<commit_after># Release notes
All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](http://semver.org/).

## 4.0.0
- **Breaking Changes:** Most plugins and themes should be incompatible with this version
- GitBook rendering is now done using React, which brings better APIs for plugins and a more interactive website.
- *Performances*: Installation of plugins is much faster thanks to `ied`
- *Performances*: Git conrefs are faster over large books
- *Website Feature:* new default plugin `copy-code` to copy code blocks content in one click
- *Website Feature:* new default plugin `heading-anchors` to have clickable headings
{'fraction_non_alphanumeric': 0.07613636363636364, 'fraction_numerical': 0.003409090909090909, 'mean_word_length': 5.034246575342466, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4058717', 'n_tokens_mistral': 227, 'n_tokens_neox': 218, 'n_words': 115}