contra-tracers-1.0.0: CHANGELOG.md

# Changelog

## [1.0.0] -- 2021-19-12

### Added

- Initial release. Key features:
  - Contravariant tracers, easily composable with parent context
  - Concurrent-safe, simple, structured (JSON), stdout writer
  - Generic definition of record of tracers for multi-component logging

### Changed 

N/A

### Removed

N/A