opentelemetry 0.18.0

A framework for collecting traces from applications.

0.18.0

• Dart 3 support, primarily through dependency version ranges instead of hard pins.
• CI tests showing that the library works in Dart 2 and Dart 3.

0.17.0

• More closely adhere to OpenTelemetry spec.
• Use Dart 2.19 in continuous integration (CI).
• Use GitHub Actions for CI.

0.15.0

• Setup code exposed through API (no longer exposed through SDK). APIs that were moved: globalTextMapPropagator, globalTracerProvider, registerGlobalTextMapPropagator, registerGlobalTracerProvider, trace, traceSync;

0.14.1

• Initial tag.