Added

• Unary gRPC tracing example. (#351)
• Prometheus exporter. (#334)
• Dogstatsd metrics exporter. (#326)

Changed

• Rename MaxSumCount aggregation to MinMaxSumCount and add the Min interface for this aggregation. (#352)
• Rename GetMeter to Meter. (#357)
• Rename HTTPTraceContextPropagator to TraceContextPropagator. (#355)
• Rename HTTPB3Propagator to B3Propagator. (#355)
• Rename HTTPTraceContextPropagator to TraceContextPropagator. (#355)
• Move /global package to /api/global. (#356)
• Rename GetTracer to Tracer. (#347)

Removed

• SetAttribute from the Span interface in the trace API. (#361)
• AddLink from the Span interface in the trace API. (#349)
• Link from the Span interface in the trace API. (#349)

Fixed

• Exclude example directories from coverage report. (#365)
• Lint make target now implements automatic fixes with golangci-lint before a second run to report the remaining issues. (#360)
• Drop GO111MODULE environment variable in Makefile as Go 1.13 is the project specified minimum version and this is environment variable is not needed for that version of Go. (#359)
• Run the race checker for all test. (#354)
• Redundant commands in the Makefile are removed. (#354)
• Split the generate and lint targets of the Makefile. (#354)
• Renames circle-ci target to more generic ci in Makefile. (#354)
• Add example Prometheus binary to gitignore. (#358)
• Support negative numbers with the MaxSumCount. (#335)
• Resolve race conditions in push_test.go identified in #339. (#340)
• Use /usr/bin/env bash as a shebang in scripts rather than /bin/bash. (#336)
• Trace benchmark now tests both AlwaysSample and NeverSample.
  Previously it was testing AlwaysSample twice. (#325)
• Trace benchmark now uses a []byte for TraceID to fix failing test. (#325)
• Added a trace benchmark to test variadic functions in setAttribute vs setAttributes (#325)
• The defaultkeys batcher was only using the encoded label set as its map key while building a checkpoint.
  This allowed distinct label sets through, but any metrics sharing a label set could be overwritten or merged incorrectly.
  This was corrected. (#333)

Changes since v0.1.2

d35ea75 go module update for release v0.2.0 (#366)
f0eb35b exclude example dirs from coverage test/report. (#365)
eb9fe13 Drop SetAttribute from Span (#361)
f25c84f Fix lint target (#360)
921ea03 Drop GO111MODULE environment variable (#359)
e6d7256 Simplify Makefile (#354)
77543cd Unary gRPC tracing example (#351)
fef504d Add Min() interface - rename MaxSumCount to MinMaxSumCount (#352)
5ec1f5c Add example prometheus binary to gitignore (#358)
a99f872 Span interface should only allow LinkedTo at creation. (#349)
3d78564 Prometheus exporter (#334)
1b08d82 Rename GetMeter() to Meter() (#357)
5f776db Remove "HTTP" from propagator names (#355)
13cd2ac move /global to /api/global (#356)
9a2484c Implement support for NonAbsolute Measurement MaxSumCount (#335)
0f052af Rename GetTracer to Tracer (#347)
059ca3e Removing pjanotti from owners (#342)
799a418 Fix race conditions in push_test.go (#340)
b9706b2 Dogstatsd metrics exporter (#326)
6b63281 Use /usr/bin/env bash rather than /bin/bash (#336)
2c437c9 fix benchmark error, with always/never sample and add benchmark setAttribute vs setAttributes (#325)
dfae2ac Fix the defaultkeys metrics batcher (#333)