Prepare release 1.20.0 (#4931)

* Add changelog for 1.20.0

* Add missing since annotations

CHANGELOG.md

@@ -2,6 +2,91 @@
 
 ## Unreleased
 
+### API
+
+- Fix bug in `W3CBaggagePropagator` that caused `+` characters to be decoded as whitespace ` `.
+  [(#4898)](https://github.com/open-telemetry/opentelemetry-java/pull/4898)
+
+#### API Extensions
+
+* DEPRECATION: the `opentelemetry-extension-aws` module containing
+  various `AwsXrayPropagator` implementations has been deprecated for removal in next major version.
+  A copy of the code will instead be maintained
+  in [opentelemetry-java-contrib/aws-xray-propagator](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/aws-xray-propagator)
+  and published under
+  coordinates `io.opentelemetry.contrib:opentelemetry-aws-xray-propagator:{version}`.
+  [(#4862)](https://github.com/open-telemetry/opentelemetry-java/pull/4862)
+
+### SDK
+
+#### Traces
+
+* Add graal hints for shaded dependencies, allowing `JcTools` queue to be used in graal environment.
+  [(#4832)](https://github.com/open-telemetry/opentelemetry-java/pull/4832)
+* `Sampler#getDescription()` implementations are now locale independent.
+  [(#4877)](https://github.com/open-telemetry/opentelemetry-java/pull/4887)
+* Allow SDK to run in environments prohibiting use of `sun.misc.Unsafe`.
+  [(#4902)](https://github.com/open-telemetry/opentelemetry-java/pull/4902)
+
+#### Metrics
+
+* Add `toString` to `AbstractInstrument`.
+  [(#4833)](https://github.com/open-telemetry/opentelemetry-java/pull/4883)
+* Add zero bucket boundary to default explicit bucket histogram aggregation.
+  [(#4819)](https://github.com/open-telemetry/opentelemetry-java/pull/4819)
+
+#### Logs
+
+* Optimize log hot path, reducing allocations significantly.
+  [(#4913)](https://github.com/open-telemetry/opentelemetry-java/pull/4913)
+* BREAKING: Add `Context` argument to `LogRecordProcessor#onEmit`.
+  [(#4889)](https://github.com/open-telemetry/opentelemetry-java/pull/4889)
+
+#### Exporter
+
+* `OtlpLogging{Signal}Exporter`s encode enums as numbers.
+  [(#4783)](https://github.com/open-telemetry/opentelemetry-java/pull/4783)
+* Add `User-Agent` header of `OTel OTLP Exporter Java/{version}` to OTLP export requests.
+  [(#4784)](https://github.com/open-telemetry/opentelemetry-java/pull/4784)
+
+#### SDK Extensions
+
+* WARNING: `opentelemetry-sdk-extension-aws` has been removed following its relocation
+  to [opentelemetry-java-contrib/instrumentation-aws-xray](https://github.com/open-telemetry/opentelemetry-java-contrib/tree/main/aws-xray),
+  which is published under
+  coordinates `io.opentelemetry.contrib:opentelemetry-aws-resources:{version}`.
+  We will push security patches to `1.19.x` as needed. The latest `opentelemetry-bom` will point
+  to the latest published version, currently `1.19.0`.
+  [(#4830)](https://github.com/open-telemetry/opentelemetry-java/pull/4830)
+* WARNING: `opentelemetry-sdk-extension-resources` has been removed following its relocation
+  to [opentelemetry-java-instrumentation/instrumentation/resources/library](https://github.com/open-telemetry/opentelemetry-java-instrumentation/tree/main/instrumentation/resources/library),
+  which is published under
+  coordinates `io.opentelemetry.instrumentation:opentelemetry-resources:{version}`.
+  We will push security patches to `1.19.x` as needed. The latest `opentelemetry-bom` will point
+  to the latest published version, currently `1.19.0`.
+  [(#4828)](https://github.com/open-telemetry/opentelemetry-java/pull/4828)
+* Add autoconfigure support for `BatchLogRecordProcessor`.
+  [(#4811)](https://github.com/open-telemetry/opentelemetry-java/pull/4811)
+* Autoconfigure performs percent decoding on `otel.resource.attributes` values.
+  [(#4653)](https://github.com/open-telemetry/opentelemetry-java/issues/4653)
+* Unify compression configuration for exporters including
+  [(#4775)](https://github.com/open-telemetry/opentelemetry-java/issues/4775):
+  * Fix handling of `none` in OTLP exporters.
+  * Add `JaegerGrpcSpanExporterBuilder#setCompression(String)`.
+  * Add `ZipkinSpanExporterBuilder#setCompression(String)`.
+
+### Semantic Conventions
+
+* Add migration notes to deprecated attributes
+  [(#4840)](https://github.com/open-telemetry/opentelemetry-java/pull/4840)
+
+### OpenTracing Shim
+
+* Use `opentracing-shim` as instrumentation scope name.
+  [(#4890)](https://github.com/open-telemetry/opentelemetry-java/pull/4890)
+* Add full support for multiple parents.
+  [(#4916)](https://github.com/open-telemetry/opentelemetry-java/pull/4916)
+
 ## Version 1.19.0 (2022-10-07)
 
 This release contains a large number of changes to the log signal following a series of significant

exporters/jaeger/src/main/java/io/opentelemetry/exporter/jaeger/JaegerGrpcSpanExporterBuilder.java

@@ -69,6 +69,8 @@ public final class JaegerGrpcSpanExporterBuilder {
   /**
    * Sets the method used to compress payloads. If unset, compression is disabled. Currently
    * supported compression methods include "gzip" and "none".
+   *
+   * @since 1.20.0
    */
   public JaegerGrpcSpanExporterBuilder setCompression(String compressionMethod) {
     requireNonNull(compressionMethod, "compressionMethod");

exporters/zipkin/src/main/java/io/opentelemetry/exporter/zipkin/ZipkinSpanExporterBuilder.java

@@ -101,6 +101,7 @@ public final class ZipkinSpanExporterBuilder {
    * @param compressionMethod The compression method, ex. "gzip".
    * @return this.
    * @see OkHttpSender
+   * @since 1.20.0
    */
   public ZipkinSpanExporterBuilder setCompression(String compressionMethod) {
     requireNonNull(compressionMethod, "compressionMethod");