Added

• New API package api/metric/registry that exposes a MeterImpl wrapper for use by SDKs to generate unique instruments. (#580)
• Script to verify examples after a new release. (#579)

Removed

• The dogstatsd exporter due to lack of support.
  This additionally removes support for statsd. (#591)
• LabelSet from the metric API.
  This is replaced by a []core.KeyValue slice. (#595)
• Labels from the metric API's Meter interface. (#595)

Changed

• The metric export.Labels became an interface which the SDK implements and the export package provides a simple, immutable implementation of this interface intended for testing purposes. (#574)
• Renamed internal/metric.Meter to MeterImpl. (#580)
• Renamed api/global/internal.obsImpl to asyncImpl. (#580)

Fixed

• Corrected missing return in mock span. (#582)
• Update License header for all source files to match CNCF guidelines and include a test to ensure it is present. (#586) (#596)
• Update to v0.3.0 of the OTLP in the OTLP exporter. (#588)
• Update pre-release script to be compatible between GNU and BSD based systems. (#592)
• Add a RecordBatch benchmark. (#594)
• Moved span transforms of the OTLP exporter to the internal package. (#593)
• Build both go-1.13 and go-1.14 in circleci to test for all supported versions of Go. (#569)
• Removed unneeded allocation on empty labels in OLTP exporter. (#597)
• Update BatchedSpanProcessor to process the queue until no data but respect max batch size. (#599)
• Update project documentation godoc.org links to pkg.go.dev. (#602)

Changes since v0.3.0

f474c34 Script to verify example after new release. (#579)
5d346a4 update godoc.org links to pkg.go.dev (#602)
1e8e72b Process the queue until no data but respect max batch size (#599)
e8546e3 Remove Labelset (#595)
e7a9ba1 Remove unneeded allocation on empty labels (#597)
e458809 Build both go-1.13 and go-1.14 in circleci (#569)
c97b4f7 Update project License headers and checking (#596)
c9dcc1b Move span transforms of the OTLP exporter to internal (#593)
cfe74cf Add a RecordBatch benchmark (#594)
4c69dd3 Remove dogstatsd and statsd support (#591)
06f833e Unique instrument checking (#580)
dff6265 Pre-release script fixes (#592)
d648712 Kick label encoder out of sdk (#574)
6f881b4 update to proto v0.3.0 (#588)
a485d0e Update License header for all source files (#586)
c16f56e Fix missing return in mock span (#582)