Release 1.6.0

• Support cloning span contexts
• Add optional accessors for trace-id/span-id
• Fix windows build issues
• Support string_views in opentracing::Value
• Add more flexible logging APIs

Release 1.5.1

• Fixes issue with dynamic loading envoyproxy/envoy#5481

Release 1.5.0

• Adds dynamic loading support for Windows (#85 )
• Introduces ABI versioning (#91 )

Release 1.4.2

• Fix issue with hunter (#83)

Release 1.4.1

• Fix build on Windows (#80)
• Support specifying lib target for installation (#78)
• Fix example (#79)

Release 1.4.0

• Add constants for standard tags (#67)
• Fix expected class for dereferencing rvalue references (#65)
• Fix bazel build on OS X (#69)

Release 1.3.0

• Adds a mocktracer library to make testing easier.
• Support dynamically loading tracer libraries.
• Support specifying logs in FinishSpanOptions

Release 1.2.0

• Add bazel support.
• Fix #39.
• Integrate with TravisCI.
• Ensure tests run when building in release mode.

Release 1.1.0

• Adds an optional TextMapReader::LookupKey function that can be used to support faster span context propagation.
• Support disabling the build of testing code.

Release 1.0.0

v1.0.0

Start version at 1.0. (#20)