Breaking

• None.

Enhancements

• Allow custom_categories to specify a regex for a child. Enrico Zannini #688

• Update Javascript: KaTeX 0.16.25 John Fairhurst

Bug Fixes

• Don't call extension members that do not need documentation 'undocumented'. John Fairhurst

• Work around activesupport vs. concurrent-ruby crash. John Fairhurst #1414

• Better identify default implementations. John Fairhurst #1420

• Suppress warning on extensions providing default implementations. John Fairhurst #1396