2nd beta release of all the packages.

Changelog

OpenTelemetry

• Changed ActivityProcessor to implement IDisposable
  (#975)
• Samplers now get the actual TraceId of the Activity to be created.
  (#1007)
• Changed the default sampler from AlwaysOn to ParentOrElse(AlwaysOn) to
  match the spec
  (#1013)
• Added SuppressInstrumentationScope API
  (#988
  #1067)
• Changed BroadcastActivityProcessor to FanOutActivityProcessor
  (#1015)
• Changed TracerProviderBuilder and TracerProviderSdk design to simply the
  flow and usage
  (#1008
  #1027
  #1035)
• Changed AddActivitySource to AddSource with params support
  (#1036)
• Modified Sampler implementation to match the spec
  (#1037)
• Refactored simple export and batch export APIs
  (#1078
  #1081
  #1083
  #1085
  #1087
  #1094
  #1113
  #1127
  #1129
  #1135)
• Changed MeterProviderBuilder and MeterProviderSdk design to simply the
  flow and usage
  (#1149)
• Renamed ParentOrElseSampler to ParentBasedSampler
  (#1173)
• Renamed ProbabilitySampler to TraceIdRatioBasedSampler
  (#1174)

OpenTelemetry.Api

• Link and TelemetrySpan are using SpanAttributes instead of
  ActivityTagsCollection or Dictionary
  (#1120)
• Added RecordException in TelemetrySpan
  (#1116)
• PropagationContext is now used instead of ActivityContext in the
  ITextFormat API
  (#1048)
• Added BaggageFormat an ITextFormat implementation for managing Baggage
  propagation via the W3C
  Baggage
  header
  (#1048)
• Removed DistributedContext as it is no longer part of the spec
  (#1048))
• Renaming from ot to otel
  (#1046)
• Added RuntimeContext API
  (#948)
• Changed Link constructor to accept ActivityTagsCollection instead of
  IDictionary<string, object> attributes
  (#954)
• Added more TelemetrySpan.SetAttribute overloads with value of type bool,
  int, double (string already existed)
  (#954)
• Changed TelemetrySpan.SetAttribute to match the spec
  (#954)
  • Setting an attribute with an existing key now results in overwriting it
  • Setting null value has no impact except if null is set to an existing key,
    it gets removed
• Changed HttpStatusCode in all spans attribute (http.status_code) to use int
  value
  (#998)
• Added CompositePropagator which accepts a list of ITextFormat to match the
  spec (#923)
• Replaced ITextFormatActivity with ITextFormat
  (#923)
• Added StartRootSpan and StartActiveSpan
  (#994)
• Changed StartSpan to not set the created span as Active to match the spec
  (#994)
• Updated System.Diagnostics.DiagnosticSource to version 5.0.0-preview.8.20407.11.
• Removed CorrelationContext and added Baggage, an implementation of the
  Baggage API
  spec
  (#1106)
• Renamed TraceContextFormat to TextMapPropagator, BaggageFormat to
  BaggagePropagator, and B3Format to B3Propagator
  (#1175)
• Renamed ITextPropagator to IPropagator
  (#1190)

OpenTelemetry.Exporter.Console

• Changed UseConsoleExporter to AddConsoleExporter, improved readability
  (#1051)

OpenTelemetry.Exporter.Jaeger

• Changed JaegerExporter to use BatchExportActivityProcessor by default
  (#1125)

• Span links will now be sent as FOLLOWS_FROM reference type. Previously they
  were sent as CHILD_OF.
  (#970)

• Renamed extension method from UseJaegerExporter to AddJaegerExporter.

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Allow configurable gRPC channel options
  (#1033)
• Renamed extension method from UseOtlpExporter to AddOtlpExporter
  (#1066)
• Changed OtlpExporter to use BatchExportActivityProcessor by default
  (#1104)

OpenTelemetry.Exporter.Prometheus

OpenTelemetry.Exporter.Zipkin

• Renamed extension method from UseZipkinExporter to AddZipkinExporter
  (#1066)
• Changed ZipkinExporter to use BatchExportActivityProcessor by default
  (#1103)
• Fixed issue when span has both the net.peer.name and net.peer.port
  attributes but did not include net.peer.port in the service address field
  (#1168).

OpenTelemetry.Exporter.ZPages

• Renamed extension method from UseZPagesExporter to AddZPagesExporter
  (#1066)
• Changed ZPagesExporter to use ZPagesProcessor by default
  (#1108)

OpenTelemetry.Extensions.Hosting

• Renamed all extension methods from AddOpenTelemetry to AddOpenTelemetryTracerProvider

OpenTelemetry.Instrumentation.AspNet

• Added Filter public API on AspNetInstrumentationOptions to allow
  filtering of instrumentation based on HttpContext.

• Asp.Net Instrumentation automatically populates HttpRequest, HttpResponse in
  Activity custom property

• Changed the default propagation to support W3C Baggage
  (#1048)

  • The default ITextFormat is now CompositePropagator(TraceContextFormat, BaggageFormat). Baggage sent via the W3C
    Baggage
    header will now be parsed and set on incoming Http spans.

• Renamed ITextPropagator to IPropagator
  (#1190)

OpenTelemetry.Instrumentation.AspNetCore

• Added Filter public API on AspNetCoreInstrumentationOptions to allow
  filtering of instrumentation based on HttpContext.

• Asp.Net Core Instrumentation automatically populates HttpRequest,
  HttpResponse in Activity custom property

• Changed the default propagation to support W3C Baggage
  (#1048)

  • The default ITextFormat is now CompositePropagator(TraceContextFormat, BaggageFormat). Baggage sent via the W3C
    Baggage
    header will now be parsed and set on incoming Http spans.

• Introduced support for Grpc.AspNetCore (#803).

  • Attributes are added to gRPC invocations: rpc.system, rpc.service,
    rpc.method. These attributes are added to an existing span generated by
    the instrumentation. This is unlike the instrumentation for client-side gRPC
    calls where one span is created for the gRPC call and a separate span is
    created for the underlying HTTP call in the event both gRPC and HTTP
    instrumentation are enabled.

• Renamed ITextPropagator to IPropagator
  (#1190)

OpenTelemetry.Instrumentation.GrpcNetClient

• NuGet package renamed to OpenTelemetry.Instrumentation.GrpcNetClient to
  more clearly indicate that this package is specifically for gRPC client
  instrumentation. The package was previously named
  OpenTelemetry.Instrumentation.Grpc.
  (#1136)
• Grpc.Net.Client Instrumentation automatically populates HttpRequest in
  Activity custom property
  (#1099)
  (#1128)

OpenTelemetry.Instrumentation.Http

• Rename FilterFunc to Filter.

• HttpClient/HttpWebRequest instrumentation will now add the raw Request,
  Response, and/or Exception objects to the Activity it creates
  (#1099)

• Changed the default propagation to support W3C Baggage
  (#1048)

  • The default ITextFormat is now CompositePropagator(TraceContextFormat, BaggageFormat). Outgoing Http request will now send Baggage using the W3C
    Baggage
    header. Previously Baggage was sent using the Correlation-Context header,
    which is now outdated.

• Removed AddHttpInstrumentation and AddHttpWebRequestInstrumentation (.NET
  Framework) TracerProviderBuilderExtensions. AddHttpClientInstrumentation
  will now register HttpClient instrumentation on .NET Core and HttpClient +
  HttpWebRequest instrumentation on .NET Framework.

• Renamed ITextPropagator to IPropagator
  (#1190)

OpenTelemetry.Instrumentation.SqlClient

• .NET Core SqlClient instrumentation will now add the raw Command object to the
  Activity it creates
  (#1099)
• Renamed from AddSqlClientDependencyInstrumentation to
  AddSqlClientInstrumentation

OpenTelemetry.Instrumentation.StackExchangeRedis

OpenTelemetry.Shims.OpenTracing

• Renamed ITextPropagator to IPropagator
  (#1190)