Deprecations
This will be the last minor release to support the following versions:
* Python 3.4
* Django 1.8, 1.9 and 1.10
* Flask < 1.0
In addition, as of this release we only supported capturing extended
information on Elasticsearch queries when using keyword arguments with the
elasticsearch-py API. This is in keeping with the
upstream policy (https://elasticsearch-py.readthedocs.io/en/master/api.html#api-documentation)
of positional arguments being unsupported. (697)
New Features
* Refactored spawning of background threads (636)
* Added support for aiohttp client and server (659)
* Added support for tornado web framework (661)
* Added support for starlette/fastapi (694)
* Added support for W3C `traceparent` and `tracestate` headers (660)
* Added Django 3.0 and Flask 1.1 to the support matrix (667)
* Added support for aiopg (668)
* Use Span ID as parent ID in errors if an error happens inside a span (669)
* Added experimental support for API Key authentication (679)
Bug fixes
* introduced workaround to avoid instrumenting twice in rare cases (708)