Beta v5 release

Documentation

Documentation has been significantly overhauled and is available on readthedocs:

https://opentelemetry-python.readthedocs.io/en/v0.5.0/

Documentation improvements include:

• a getting started guide
• examples has been consolidated to an docs/examples folder
• several minor improvements to the examples in each extension's README

opentelemetry-api

• Adding Correlation Context API and propagator (#471)
• Adding a global configuration module to simplify setting and getting globals (#466)
• Rename metric handle to bound metric (#470)
• Moving resources to sdk (#464)
• Implementing propagators to API to use context (#446)
• Implement observer instrument for metrics (#425)
• Adding named meters, removing batchers (#431)
• Renaming TraceOptions to TraceFlags (#450)
• Renaming TracerSource to TraceProvider (#441)

opentelemetry-sdk

• Adding Correlation Context SDK and propagator (#471)
• Adding OT Collector metrics exporter (#454)
• Improve validation of attributes (#460)
• Re-raise errors caught in opentelemetry.sdk.trace.Tracer.use_span() (#469)
• Adding named meters, removing batchers (#431)
• Make counter and MinMaxSumCount aggregators thread safe (#439)

opentelemetry-ext-otcollector

Initial release. Support is included for both trace and metrics.