Version 1.6.0
Metrics general release
Enhancements:
- Asynchronous metric instruments (ObservableCounter, ObservableUpDownCounter, ObservableGauge)
- Full support of View class including changing aggregation behavior and filtering attributes
- Update opentelemetry-cpp to 1.14.0
Breaking Changes:
- C++14 is now required. Compilers with only C++11 support are no longer supported.