v3 refactor (#1868)

* Move to v3

Co-authored-by: Ben Toogood <bentoogood@gmail.com>

config/source/file/file.go

@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"os"
 
-	"github.com/micro/go-micro/v2/config/source"
+	"github.com/micro/go-micro/v3/config/source"
 )
 
 type file struct {

config/source/file/file_test.go

@@ -7,8 +7,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/micro/go-micro/v2/config"
-	"github.com/micro/go-micro/v2/config/source/file"
+	"github.com/micro/go-micro/v3/config"
+	"github.com/micro/go-micro/v3/config/source/file"
 )
 
 func TestConfig(t *testing.T) {

config/source/file/format.go

@@ -3,7 +3,7 @@ package file
 import (
 	"strings"
 
-	"github.com/micro/go-micro/v2/config/encoder"
+	"github.com/micro/go-micro/v3/config/encoder"
 )
 
 func format(p string, e encoder.Encoder) string {

config/source/file/format_test.go

@@ -3,7 +3,7 @@ package file
 import (
 	"testing"
 
-	"github.com/micro/go-micro/v2/config/source"
+	"github.com/micro/go-micro/v3/config/source"
 )
 
 func TestFormat(t *testing.T) {

config/source/file/options.go

@@ -3,7 +3,7 @@ package file
 import (
 	"context"
 
-	"github.com/micro/go-micro/v2/config/source"
+	"github.com/micro/go-micro/v3/config/source"
 )
 
 type filePathKey struct{}

config/source/file/watcher.go

@@ -6,7 +6,7 @@ import (
 	"os"
 
 	"github.com/fsnotify/fsnotify"
-	"github.com/micro/go-micro/v2/config/source"
+	"github.com/micro/go-micro/v3/config/source"
 )
 
 type watcher struct {

config/source/file/watcher_linux.go

@@ -6,7 +6,7 @@ import (
 	"os"
 
 	"github.com/fsnotify/fsnotify"
-	"github.com/micro/go-micro/v2/config/source"
+	"github.com/micro/go-micro/v3/config/source"
 )
 
 type watcher struct {