* Fix lint issues in otel package
Add documentation for the shadowed `Meter` for the time being.
Do not export `ErrInvalidHexID`, `ErrInvalidTraceIDLength`,
`ErrInvalidSpanIDLength`, `ErrInvalidSpanIDLength`, or `ErrNilSpanID`.
These are not used externally and we should reduce the API prior to a GA
release to allow flexibility going forward.
Add and update comments for all SpanKind conforming to golint spec.
* Update CHANGELOG
* Move trace API to otel
* Move tracetest to oteltest
* Update package documentation
* Remove old api/trace package
* Lint
* Add changes to CHANGELOG
* Add tests for rest of trace API
* Apply suggestions from code review
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Documentation fixes
Includes resolutions for review issues.
* Correct CHANGELOG post release
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>