Release 0.14.6 - DO NOT USE

• Fix remaining circular dependencies in mock_tracer submodule (#154) -- thanks Minh Nguyen
• Handle non-extending Span classes in Reference constructor (#162) -- thanks treble-snake

UPDATE: an issue (#172) was discovered with this release, it's been replaced with v0.14.7 published from the branch rollback-v0.14.6 while the issue is being fixed. Most likely related to #162.

Release 0.14.5

• Fix circular dependency in mock_context (#154) -- thanks Jonathan Moody

v0.14.4

0.14.4

• Add trace identifiers to the SpanContext