- Breaking: increase TypeScript strictness around arguments. Only affects TypeScript users. See helmetjs/helmet#369
- Dropped support for old Node versions. Node 14+ is now required
- Dropped support for Node <8
- Added TypeScript type definitions. See #7
- Created a changelog
- Added additional package metadata
- Excluded some files from npm package
Changes in versions 0.3.0 and below can be found in Helmet's changelog.