Run go fmt and goimports on all files, to make them follow Golang standards

pkg/cryptstate/mode_ocb2.go

@@ -7,6 +7,7 @@ package cryptstate
 import (
 	"crypto/aes"
 	"crypto/cipher"
+
 	"mumble.info/grumble/pkg/cryptstate/ocb2"
 )
 

pkg/cryptstate/mode_secretbox.go

@@ -5,8 +5,9 @@
 package cryptstate
 
 import (
-	"golang.org/x/crypto/nacl/secretbox"
 	"unsafe"
+
+	"golang.org/x/crypto/nacl/secretbox"
 )
 
 // secretBoxMode implements the XSalsa20-Poly1305 CryptoMode

pkg/freezer/freezer_test.go

@@ -7,12 +7,13 @@ package freezer
 import (
 	"bytes"
 	"encoding/binary"
-	"github.com/golang/protobuf/proto"
 	"hash/crc32"
 	"io"
 	"math"
 	"os"
 	"testing"
+
+	"github.com/golang/protobuf/proto"
 )
 
 var testValues []proto.Message = []proto.Message{

pkg/freezer/walker.go

@@ -6,11 +6,12 @@ package freezer
 
 import (
 	"encoding/binary"
-	"github.com/golang/protobuf/proto"
 	"hash"
 	"hash/crc32"
 	"io"
 	"math"
+
+	"github.com/golang/protobuf/proto"
 )
 
 // Checks whether the error err is an EOF

pkg/freezer/writer.go

@@ -18,12 +18,13 @@ package freezer
 import (
 	"bytes"
 	"encoding/binary"
-	"github.com/golang/protobuf/proto"
 	"hash"
 	"hash/crc32"
 	"io"
 	"math"
 	"os"
+
+	"github.com/golang/protobuf/proto"
 )
 
 // Log implements an append-only log for flattened