v0.3.0-beta.1

This release add various new instrumentations and more propagation options.

Added

• Add Grpc.Net.Client traces instrumentation.
• Add MySql.Data traces instrumentation.
• Add Npgsql traces instrumentation.
• Add StackExchange.Redis traces instrumentation.
• Add configuration option none to OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS
  and OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS.
• Add support for the b3multi propagator.
• Add support for the OTEL_PROPAGATORS environment variable.
  Supported configuration options are b3multi, baggage, tracecontext.
  Default is tracecontext,baggage.

Changed

• Renamed OTEL_DOTNET_AUTO_TRACES_ENABLED to OTEL_DOTNET_AUTO_ENABLED since it
  controls enabling or disabling the CLR profiler independent of the signal type.
• OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS default value is changed to
  include all of the available instrumentations.
• OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS default value is changed to
  include all of the available instrumentations.
• Changed Tracing sampler from always_on to parentbased_always_on.
  See the OpenTelemetry specification
  for more details.

Removed

• Remove OTEL_DOTNET_AUTO_DOMAIN_NEUTRAL_INSTRUMENTATION configuration
  as it is not needed.
• Remove OTEL_DOTNET_AUTO_{0}_ENABLED configuration,
  use OTEL_DOTNET_AUTO_[TRACES/METRICS]_[ENABLED/DISABLED]_INSTRUMENTATIONS
  instead.
• Remove OTEL_DOTNET_AUTO_METRICS_ENABLED configuration as it is not needed.