- Update to 21.5.0:
* Added the structlog.processors.LogfmtRenderer processor to render
log lines using the logfmt format. #376
* Added the structlog.stdlib.ExtraAdder processor that adds extra
attributes of logging.LogRecord objects to the event dictionary.
This processor can be used for adding data passed in the extra
parameter of the logging module's log methods to the event
dictionary. #209 #377
* Added the structlog.processor.CallsiteParameterAdder processor that
adds parameters of the callsite that an event dictionary orginated
from to the event dictionary. This processor can be used to enrich
events dictionaries with information such as the function name,
line number and filename that an event dictionary orignated from. #380

- Update to 21.4.0:
* Fixed import when running in optimized mode (PYTHONOPTIMIZE=2
or python -OO). #373
* Added the structlog.threadlocal.bound_threadlocal and
structlog.contextvars.bound_contextvars decorator/context managers
to temporarily bind key/value pairs to a thread-local and context-local
context. #371

- Update to 21.3.0:
* structlog.dev.ConsoleRenderer now has sort_keys boolean parameter
that allows to disable the sorting of keys on output. #358
* structlog.processors.TimeStamper now works well with FreezeGun
even when it gets applied before the loggers are configured. #364
* structlog.stdlib.AsyncBoundLogger now determines the running loop
when logging, not on instantiation. That has a minor performance
impact, but makes it more robust when loops change