opentelemetry-http 0.4.0

Helper implementations for exchange of traces and metrics over HTTP
Documentation
# Changelog

## v0.4.0

### Changed

- Update to opentelemetry v0.15.0

## v0.3.0

### Changed

- Return response from `HttpClient` #511
- Update to opentelemetry v0.14.0

## v0.2.0

### Changed
- Update to opentelemetry v0.13.0

## v0.1.0

### Added

- Opentelemetry integration with http #415