Alpha v6 release: Alpha release of core packages:

• opentelemetry-api
• opentelemetry-sdk

and exporter packages:

• opentelemetry-exporter-otlp
• opentelemetry-exporter-etw
• opentelemetry-exporter-zipkin
• opentelemetry-exporter-jaeger

Changelog:

• [EXPORTER] Add Jaeger exporter (#534)
• [SDK] Support multiple processors (#692)
• [SDK] Add instrumentation library and multiple tracer support (#693)
• [SDK] Resource integration with Exporters (#706)
• [EXAMPLE] Enhance existing http example with propagation (#727)