Release v0.10.0

[MrAlias]

This release migrates the default OpenTelemetry SDK into its own Go module, decoupling the SDK from the API and reducing dependencies for instrumentation packages.

Added

• The Zipkin exporter now has NewExportPipeline and InstallNewPipeline constructor functions to match the common pattern. These function build a new exporter with default SDK options and register the exporter with the global package respectively. (Unify trace and metric exporter helpers #944)
• Add propagator option for gRPC instrumentation. (Add propagator option for gRPC instrumentation #986)
• The testtrace package now tracks the trace.SpanKind for each span. (testtrace.Span tracks and returns its SpanKind. #987)

Changed

• Replace the RegisterGlobal Option in the Jaeger exporter with an InstallNewPipeline constructor function. This matches the other exporter constructor patterns and will register a new exporter after building it with default configuration. (Unify trace and metric exporter helpers #944)
• The trace (go.opentelemetry.io/otel/exporters/trace/stdout) and metric (go.opentelemetry.io/otel/exporters/metric/stdout) stdout exporters are now merged into a single exporter at go.opentelemetry.io/otel/exporters/stdout. This new exporter was made into its own Go module to follow the pattern of all exporters and decouple it from the go.opentelemetry.io/otel module. (Unify trace and metric stdout exporters #956, Make the stdout exporter a package #963)
• Move the go.opentelemetry.io/otel/exporters/test test package to go.opentelemetry.io/otel/sdk/export/metric/metrictest. (Move export test package to SDK #962)
• The go.opentelemetry.io/otel/api/kv/value package was merged into the parent go.opentelemetry.io/otel/api/kv package. (Remove sub-package value from kv #968)
  • value.Bool was replaced with kv.BoolValue.
  • value.Int64 was replaced with kv.Int64Value.
  • value.Uint64 was replaced with kv.Uint64Value.
  • value.Float64 was replaced with kv.Float64Value.
  • value.Int32 was replaced with kv.Int32Value.
  • value.Uint32 was replaced with kv.Uint32Value.
  • value.Float32 was replaced with kv.Float32Value.
  • value.String was replaced with kv.StringValue.
  • value.Int was replaced with kv.IntValue.
  • value.Uint was replaced with kv.UintValue.
  • value.Array was replaced with kv.ArrayValue.
• Rename Infer to Any in the go.opentelemetry.io/otel/api/kv package. (Rename kv.Infer to kv.Any (#969) #972)
• Rename go.opentelemetry.io/otel/sdk/metric/aggregator/test package to go.opentelemetry.io/otel/sdk/metric/aggregator/aggregatortest. (Rename aggregator/test to aggregatortest #980)
• Make the SDK into its own Go module called go.opentelemetry.io/otel/sdk. (Make the SDK into its own Go module #985)

Removed

• The IndexedAttribute function from the go.opentelemetry.io/otel/api/label package was removed in favor of IndexedLabel which it was synonymous with. (Remove IndexedAttribute from api/label #970)

Fixed

• Bump github.com/golangci/golangci-lint from 1.28.3 to 1.29.0 in /tools. (Bump github.com/golangci/golangci-lint from 1.28.3 to 1.29.0 in /tools #953)
• Bump github.com/google/go-cmp from 0.5.0 to 0.5.1. (Bump github.com/google/go-cmp from 0.5.0 to 0.5.1 #957)
• Use global.Handle for span export errors in the OTLP exporter. (use global handler for span export err in otlp #946)
• Correct Go language formatting in the README documentation. (README: fixup spaces on code example #961)
• Remove default SDK dependencies from the go.opentelemetry.io/otel/api package. (Decouple API from SDK #977)
• Remove default SDK dependencies from the go.opentelemetry.io/otel/instrumentation package. (Decouple instrumentation from SDK #983)
• Move documented examples for go.opentelemetry.io/otel/instrumentation/grpctrace interceptors into Go example tests. (Move grpctrace examples from comment to code #984)