Beta v10 release.

opentelemetry-sdk

• Rename CounterAggregator -> SumAggregator (#816)

opentelemetry-exporter-cloud-monitoring

• Add ability for exporter to add unique identifier (#841)
• Added tests to tox coverage files (#804)

opentelemetry-exporter-cloud-trace

• Add g.co/agent label for Google internal metrics tracking (#833)
• Adding trouble-shooting tips (#827)
• Added Cloud Trace context propagation (#819)
• Added tests to tox coverage files (#804)

opentelemetry-ext-asyncpg

• Initial Release (#814)

opentelemetry-ext-celery

• Add instrumentation for Celery (#780)

opentelemetry-ext-elasticsearch

• Initial release (#747)

opentelemetry-ext-pymemcache

• Initial release (#772)

opentelemetry-instrumentation-starlette

• Initial release (#777)

opentelemetry-proto

• Regenerate proto code and add pyi stubs (#823)