6.8.0

Type	Description	Link
Improvement	Trace threadlocal entry is never removed, only nulled	#849

6.7.0

Automated release, no documented user facing changes

6.6.0

Automated release, no documented user facing changes

6.5.0

Automated release, no documented user facing changes

6.5.0-rc1

Type	Description	Link
Feature	User agent specified inside ForUserAgent http header will be propagated to requests made in the same trace.	#790

6.4.0

Type	Description	Link
Improvement	Remove unused headers: X-B3-ParentSpanId and X-OrigSpanId	#778

6.3.0

Type	Description	Link
Improvement	Allow conjure-undertow to leverage the DetachedSpan.attach() mechanism without creating spans for blocking work	#773

6.2.0

Type	Description	Link
Improvement	Allow detachment from thread state without creating a new span.	#770

6.1.0

Type	Description	Link
Improvement	Support attaching DetachedSpan state to a thread without creating children	#769

6.0.0

Type	Description	Link
Break	The deprecated AsyncTracer class is deleted.	#753
Break	Delete AsyncSlf4jSpanObserver - internally we construct a SpanObserver which uses log4j2 to ensure that spans are serialized and logged without blocking threads that produce spans. This also means tracing-java no longer transitively provides jackson dependencies.	#754