Released 2020-02-03
- Updated `azure` module
([837](https://github.com/census-instrumentation/opencensus-python/pull/837),
[845](https://github.com/census-instrumentation/opencensus-python/pull/845),
[848](https://github.com/census-instrumentation/opencensus-python/pull/848),
[851](https://github.com/census-instrumentation/opencensus-python/pull/851))