enable cache for build, closes #8 (#12)

* enable cache for build, closes #8
* goimports
* lint fixes

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

client/cache.go

@@ -7,8 +7,8 @@ import (
 	"hash/fnv"
 	"time"
 
-	"github.com/unistack-org/micro/v3/metadata"
 	cache "github.com/patrickmn/go-cache"
+	"github.com/unistack-org/micro/v3/metadata"
 )
 
 // NewCache returns an initialised cache.

client/grpc/codec.go

@@ -9,9 +9,9 @@ import (
 
 	"github.com/golang/protobuf/jsonpb"
 	"github.com/golang/protobuf/proto"
+	"github.com/oxtoacart/bpool"
 	"github.com/unistack-org/micro/v3/codec"
 	"github.com/unistack-org/micro/v3/codec/bytes"
-	"github.com/oxtoacart/bpool"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/encoding"
 )