Move api/unit to top level (#1185)

* Move api/unit to top level

* Add changes to CHANGELOG

CHANGELOG.md

@@ -45,6 +45,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Don't consider unset environment variable for resource detection to be an error. (#1170)
 - Rename `go.opentelemetry.io/otel/api/metric.ConfigureInstrument` to `NewInstrumentConfig` and
   `go.opentelemetry.io/otel/api/metric.ConfigureMeter` to `NewMeterConfig`.
+- Move the `go.opentelemetry.io/otel/api/unit` package to `go.opentelemetry.io/otel/unit`. (#1185)
 
 ### Fixed
 

api/metric/api_test.go

@@ -22,8 +22,8 @@ import (
 	"go.opentelemetry.io/otel/api/metric"
 	"go.opentelemetry.io/otel/api/metric/metrictest"
 	mockTest "go.opentelemetry.io/otel/api/metric/metrictest"
-	"go.opentelemetry.io/otel/api/unit"
 	"go.opentelemetry.io/otel/label"
+	"go.opentelemetry.io/otel/unit"
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"

api/metric/config.go

@@ -14,7 +14,7 @@
 
 package metric
 
-import "go.opentelemetry.io/otel/api/unit"
+import "go.opentelemetry.io/otel/unit"
 
 // InstrumentConfig contains options for instrument descriptors.
 type InstrumentConfig struct {

api/metric/descriptor.go

@@ -14,7 +14,7 @@
 
 package metric
 
-import "go.opentelemetry.io/otel/api/unit"
+import "go.opentelemetry.io/otel/unit"
 
 // Descriptor contains all the settings that describe an instrument,
 // including its name, metric kind, number kind, and the configurable

exporters/otlp/internal/transform/metric_test.go

@@ -27,13 +27,13 @@ import (
 	metricpb "go.opentelemetry.io/otel/exporters/otlp/internal/opentelemetry-proto-gen/metrics/v1"
 
 	"go.opentelemetry.io/otel/api/metric"
-	"go.opentelemetry.io/otel/api/unit"
 	"go.opentelemetry.io/otel/label"
 	export "go.opentelemetry.io/otel/sdk/export/metric"
 	"go.opentelemetry.io/otel/sdk/export/metric/aggregation"
 	"go.opentelemetry.io/otel/sdk/export/metric/metrictest"
 	"go.opentelemetry.io/otel/sdk/metric/aggregator/minmaxsumcount"
 	sumAgg "go.opentelemetry.io/otel/sdk/metric/aggregator/sum"
+	"go.opentelemetry.io/otel/unit"
 )
 
 var (

unit/doc.go

@@ -13,4 +13,4 @@
 // limitations under the License.
 
 // Package unit provides units.
-package unit // import "go.opentelemetry.io/otel/api/unit"
+package unit // import "go.opentelemetry.io/otel/unit"