Beta v6 release.

Documentation

Documentation continues to see large improvements, including re-organizing the examples to make them more discoverable.

READMEs and the getting started guide also have some corrections.

opentelemetry-api

• Add support for lazy events and links (#474)
• Metrics API no longer uses LabelSet (#527)
• Adding is_remote flag to SpanContext, indicating when a span is remote (#516)
• Allow digit as first char in vendor specific trace state key (#511)

opentelemetry-sdk

• Add support for lazy events and links (#474)
• Metrics API no longer uses LabelSet (#527)
• Adding is_remote flag to SpanContext, indicating when a span is remote (#516)
• Adding a solution to release metric handles and observers (#435)

opentelemetry-ext-flask

• Add an entry_point to be usable in auto-instrumentation (#327)

opentelemetry-ext-jaeger

• Exporting to collector now works (#508)

opentelemetry-ext-grpc

• Add gRPC integration (#476)
• Initial release