Release v0.16.0

v0.16.0 (2020-09-11)

Enhancements

• FIX protocol specification: look up class attributes in parent classes as well. This allows new FIX protocol
  specifications, which can include custom tags and message types, to be derived from a standard base protocol
  definition.
• Stop processing messages as soon as an unhandled exception occurs. This ensures that all apps have the same state
  up until the point at which the exception was raised.
• The pipeline will now not process any messages for apps that have already been shut down.
• BasePipeline.stop() now accepts an optional keyword argument that can be used to pass the exception that caused
  the pipeline to be stopped. This makes it possible to distinguish between normal and abnormal pipeline shutdowns so
  that OS exit codes can be set properly by the calling process.

Fixes

• Remove tag numbers >= 956 from the standard FIX 4.4 protocol definition. These all fall within the customer-defined
  number range and do not form part of the official standard.
• Remove non-standard message types from the FIX 4.4. protocol definition.
• Don't re-raise exceptions in asyncio tasks that trigger a pipeline shutdown. This prevents the application's stop()
  method from being interrupted before it has been fully processed.