v0.8.0

Added

• get_request_logger() and RequestLogger collect nested fields onto the active span as one wide event per request.
• FileSubscriber writes track() events to an NDJSON file, with or without an event loop.
• autotel.http.extract_trace_context() reads W3C trace context and baggage from incoming headers.
• bucket() and compare_cohorts() in autotel.analysis for comparing slow and normal requests.
• trace("name", fn) wraps an existing function.
• AUTOTEL_DEBUG_BAGGAGE_KEY constant ("autotel.debug").

Changed

• init(metrics=True) also sets up the Metric helper, so create_counter() and create_histogram() work straight away.
• shutdown() sends events still queued for async subscribers when no event loop was running.