diff --git a/vendor/github.com/golang/protobuf/proto/decode.go b/vendor/github.com/golang/protobuf/proto/decode.go
index d9aa3c4..63b0f08 100644
--- a/vendor/github.com/golang/protobuf/proto/decode.go
+++ b/vendor/github.com/golang/protobuf/proto/decode.go
@@ -186,7 +186,6 @@
 	if b&0x80 == 0 {
 		goto done
 	}
-	// x -= 0x80 << 63 // Always zero.
 
 	return 0, errOverflow
 
diff --git a/vendor/github.com/golang/protobuf/proto/deprecated.go b/vendor/github.com/golang/protobuf/proto/deprecated.go
new file mode 100644
index 0000000..35b882c
--- /dev/null
+++ b/vendor/github.com/golang/protobuf/proto/deprecated.go
@@ -0,0 +1,63 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2018 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import "errors"
+
+// Deprecated: do not use.
+type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
+
+// Deprecated: do not use.
+func GetStats() Stats { return Stats{} }
+
+// Deprecated: do not use.
+func MarshalMessageSet(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSet([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func MarshalMessageSetJSON(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSetJSON([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func RegisterMessageSetType(Message, int32, string) {}
diff --git a/vendor/github.com/golang/protobuf/proto/equal.go b/vendor/github.com/golang/protobuf/proto/equal.go
index d4db5a1..f9b6e41 100644
--- a/vendor/github.com/golang/protobuf/proto/equal.go
+++ b/vendor/github.com/golang/protobuf/proto/equal.go
@@ -246,7 +246,8 @@
 			return false
 		}
 
-		m1, m2 := e1.value, e2.value
+		m1 := extensionAsLegacyType(e1.value)
+		m2 := extensionAsLegacyType(e2.value)
 
 		if m1 == nil && m2 == nil {
 			// Both have only encoded form.
diff --git a/vendor/github.com/golang/protobuf/proto/extensions.go b/vendor/github.com/golang/protobuf/proto/extensions.go
index 816a3b9..fa88add 100644
--- a/vendor/github.com/golang/protobuf/proto/extensions.go
+++ b/vendor/github.com/golang/protobuf/proto/extensions.go
@@ -185,9 +185,25 @@
 	// extension will have only enc set. When such an extension is
 	// accessed using GetExtension (or GetExtensions) desc and value
 	// will be set.
-	desc  *ExtensionDesc
+	desc *ExtensionDesc
+
+	// value is a concrete value for the extension field. Let the type of
+	// desc.ExtensionType be the "API type" and the type of Extension.value
+	// be the "storage type". The API type and storage type are the same except:
+	//	* For scalars (except []byte), the API type uses *T,
+	//	while the storage type uses T.
+	//	* For repeated fields, the API type uses []T, while the storage type
+	//	uses *[]T.
+	//
+	// The reason for the divergence is so that the storage type more naturally
+	// matches what is expected of when retrieving the values through the
+	// protobuf reflection APIs.
+	//
+	// The value may only be populated if desc is also populated.
 	value interface{}
-	enc   []byte
+
+	// enc is the raw bytes for the extension field.
+	enc []byte
 }
 
 // SetRawExtension is for testing only.
@@ -334,7 +350,7 @@
 			// descriptors with the same field number.
 			return nil, errors.New("proto: descriptor conflict")
 		}
-		return e.value, nil
+		return extensionAsLegacyType(e.value), nil
 	}
 
 	if extension.ExtensionType == nil {
@@ -349,11 +365,11 @@
 
 	// Remember the decoded version and drop the encoded version.
 	// That way it is safe to mutate what we return.
-	e.value = v
+	e.value = extensionAsStorageType(v)
 	e.desc = extension
 	e.enc = nil
 	emap[extension.Field] = e
-	return e.value, nil
+	return extensionAsLegacyType(e.value), nil
 }
 
 // defaultExtensionValue returns the default value for extension.
@@ -488,7 +504,7 @@
 	}
 	typ := reflect.TypeOf(extension.ExtensionType)
 	if typ != reflect.TypeOf(value) {
-		return errors.New("proto: bad extension value type")
+		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
 	}
 	// nil extension values need to be caught early, because the
 	// encoder can't distinguish an ErrNil due to a nil extension
@@ -500,7 +516,7 @@
 	}
 
 	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: value}
+	extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
 	return nil
 }
 
@@ -541,3 +557,51 @@
 func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
 	return extensionMaps[reflect.TypeOf(pb).Elem()]
 }
+
+// extensionAsLegacyType converts an value in the storage type as the API type.
+// See Extension.value.
+func extensionAsLegacyType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+		// Represent primitive types as a pointer to the value.
+		rv2 := reflect.New(rv.Type())
+		rv2.Elem().Set(rv)
+		v = rv2.Interface()
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Slice:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	}
+	return v
+}
+
+// extensionAsStorageType converts an value in the API type as the storage type.
+// See Extension.value.
+func extensionAsStorageType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	case reflect.Slice:
+		// Represent slice types as a pointer to the value.
+		if rv.Type().Elem().Kind() != reflect.Uint8 {
+			rv2 := reflect.New(rv.Type())
+			rv2.Elem().Set(rv)
+			v = rv2.Interface()
+		}
+	}
+	return v
+}
diff --git a/vendor/github.com/golang/protobuf/proto/lib.go b/vendor/github.com/golang/protobuf/proto/lib.go
index 75565cc..fdd328b 100644
--- a/vendor/github.com/golang/protobuf/proto/lib.go
+++ b/vendor/github.com/golang/protobuf/proto/lib.go
@@ -341,26 +341,6 @@
 	ProtoMessage()
 }
 
-// Stats records allocation details about the protocol buffer encoders
-// and decoders.  Useful for tuning the library itself.
-type Stats struct {
-	Emalloc uint64 // mallocs in encode
-	Dmalloc uint64 // mallocs in decode
-	Encode  uint64 // number of encodes
-	Decode  uint64 // number of decodes
-	Chit    uint64 // number of cache hits
-	Cmiss   uint64 // number of cache misses
-	Size    uint64 // number of sizes
-}
-
-// Set to true to enable stats collection.
-const collectStats = false
-
-var stats Stats
-
-// GetStats returns a copy of the global Stats structure.
-func GetStats() Stats { return stats }
-
 // A Buffer is a buffer manager for marshaling and unmarshaling
 // protocol buffers.  It may be reused between invocations to
 // reduce memory usage.  It is not necessary to use a Buffer;
@@ -960,13 +940,19 @@
 	return false
 }
 
-// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion2 = true
+const (
+	// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion3 = true
 
-// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion1 = true
+	// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion2 = true
+
+	// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion1 = true
+)
 
 // InternalMessageInfo is a type used internally by generated .pb.go files.
 // This type is not intended to be used by non-generated code.
diff --git a/vendor/github.com/golang/protobuf/proto/message_set.go b/vendor/github.com/golang/protobuf/proto/message_set.go
index 3b6ca41..f48a756 100644
--- a/vendor/github.com/golang/protobuf/proto/message_set.go
+++ b/vendor/github.com/golang/protobuf/proto/message_set.go
@@ -36,13 +36,7 @@
  */
 
 import (
-	"bytes"
-	"encoding/json"
 	"errors"
-	"fmt"
-	"reflect"
-	"sort"
-	"sync"
 )
 
 // errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
@@ -145,46 +139,9 @@
 	return buf[i+1:]
 }
 
-// MarshalMessageSet encodes the extension map represented by m in the message set wire format.
-// It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSet(exts interface{}) ([]byte, error) {
-	return marshalMessageSet(exts, false)
-}
-
-// marshaMessageSet implements above function, with the opt to turn on / off deterministic during Marshal.
-func marshalMessageSet(exts interface{}, deterministic bool) ([]byte, error) {
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var u marshalInfo
-		siz := u.sizeMessageSet(exts)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, exts, deterministic)
-
-	case map[int32]Extension:
-		// This is an old-style extension map.
-		// Wrap it in a new-style XXX_InternalExtensions.
-		ie := XXX_InternalExtensions{
-			p: &struct {
-				mu           sync.Mutex
-				extensionMap map[int32]Extension
-			}{
-				extensionMap: exts,
-			},
-		}
-
-		var u marshalInfo
-		siz := u.sizeMessageSet(&ie)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, &ie, deterministic)
-
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-}
-
-// UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
+// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
 // It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSet(buf []byte, exts interface{}) error {
+func unmarshalMessageSet(buf []byte, exts interface{}) error {
 	var m map[int32]Extension
 	switch exts := exts.(type) {
 	case *XXX_InternalExtensions:
@@ -222,93 +179,3 @@
 	}
 	return nil
 }
-
-// MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
-// It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var mu sync.Locker
-		m, mu = exts.extensionsRead()
-		if m != nil {
-			// Keep the extensions map locked until we're done marshaling to prevent
-			// races between marshaling and unmarshaling the lazily-{en,de}coded
-			// values.
-			mu.Lock()
-			defer mu.Unlock()
-		}
-	case map[int32]Extension:
-		m = exts
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-	var b bytes.Buffer
-	b.WriteByte('{')
-
-	// Process the map in key order for deterministic output.
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids)) // int32Slice defined in text.go
-
-	for i, id := range ids {
-		ext := m[id]
-		msd, ok := messageSetMap[id]
-		if !ok {
-			// Unknown type; we can't render it, so skip it.
-			continue
-		}
-
-		if i > 0 && b.Len() > 1 {
-			b.WriteByte(',')
-		}
-
-		fmt.Fprintf(&b, `"[%s]":`, msd.name)
-
-		x := ext.value
-		if x == nil {
-			x = reflect.New(msd.t.Elem()).Interface()
-			if err := Unmarshal(ext.enc, x.(Message)); err != nil {
-				return nil, err
-			}
-		}
-		d, err := json.Marshal(x)
-		if err != nil {
-			return nil, err
-		}
-		b.Write(d)
-	}
-	b.WriteByte('}')
-	return b.Bytes(), nil
-}
-
-// UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
-// It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
-	// Common-case fast path.
-	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
-		return nil
-	}
-
-	// This is fairly tricky, and it's not clear that it is needed.
-	return errors.New("TODO: UnmarshalMessageSetJSON not yet implemented")
-}
-
-// A global registry of types that can be used in a MessageSet.
-
-var messageSetMap = make(map[int32]messageSetDesc)
-
-type messageSetDesc struct {
-	t    reflect.Type // pointer to struct
-	name string
-}
-
-// RegisterMessageSetType is called from the generated code.
-func RegisterMessageSetType(m Message, fieldNum int32, name string) {
-	messageSetMap[fieldNum] = messageSetDesc{
-		t:    reflect.TypeOf(m),
-		name: name,
-	}
-}
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_reflect.go b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
index b6cad90..94fa919 100644
--- a/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
+++ b/vendor/github.com/golang/protobuf/proto/pointer_reflect.go
@@ -79,10 +79,13 @@
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
 	v := reflect.ValueOf(*i)
 	u := reflect.New(v.Type())
 	u.Elem().Set(v)
+	if deref {
+		u = u.Elem()
+	}
 	return pointer{v: u}
 }
 
diff --git a/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
index d55a335..dbfffe0 100644
--- a/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
+++ b/vendor/github.com/golang/protobuf/proto/pointer_unsafe.go
@@ -85,16 +85,21 @@
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
 	// Super-tricky - read or get the address of data word of interface value.
 	if isptr {
 		// The interface is of pointer type, thus it is a direct interface.
 		// The data word is the pointer data itself. We take its address.
-		return pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+		p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+	} else {
+		// The interface is not of pointer type. The data word is the pointer
+		// to the data.
+		p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
 	}
-	// The interface is not of pointer type. The data word is the pointer
-	// to the data.
-	return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
+	if deref {
+		p.p = *(*unsafe.Pointer)(p.p)
+	}
+	return p
 }
 
 // valToPointer converts v to a pointer. v must be of pointer type.
diff --git a/vendor/github.com/golang/protobuf/proto/properties.go b/vendor/github.com/golang/protobuf/proto/properties.go
index 50b99b8..79668ff 100644
--- a/vendor/github.com/golang/protobuf/proto/properties.go
+++ b/vendor/github.com/golang/protobuf/proto/properties.go
@@ -334,9 +334,6 @@
 	sprop, ok := propertiesMap[t]
 	propertiesMu.RUnlock()
 	if ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return sprop
 	}
 
@@ -346,17 +343,20 @@
 	return sprop
 }
 
+type (
+	oneofFuncsIface interface {
+		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	}
+	oneofWrappersIface interface {
+		XXX_OneofWrappers() []interface{}
+	}
+)
+
 // getPropertiesLocked requires that propertiesMu is held.
 func getPropertiesLocked(t reflect.Type) *StructProperties {
 	if prop, ok := propertiesMap[t]; ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return prop
 	}
-	if collectStats {
-		stats.Cmiss++
-	}
 
 	prop := new(StructProperties)
 	// in case of recursive protos, fill this in now.
@@ -391,13 +391,14 @@
 	// Re-order prop.order.
 	sort.Sort(prop)
 
-	type oneofMessage interface {
-		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	var oots []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oots = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oots = m.XXX_OneofWrappers()
 	}
-	if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
-		var oots []interface{}
-		_, _, _, oots = om.XXX_OneofFuncs()
-
+	if len(oots) > 0 {
 		// Interpret oneof metadata.
 		prop.OneofTypes = make(map[string]*OneofProperties)
 		for _, oot := range oots {
diff --git a/vendor/github.com/golang/protobuf/proto/table_marshal.go b/vendor/github.com/golang/protobuf/proto/table_marshal.go
index b167944..5cb11fa 100644
--- a/vendor/github.com/golang/protobuf/proto/table_marshal.go
+++ b/vendor/github.com/golang/protobuf/proto/table_marshal.go
@@ -87,6 +87,7 @@
 	sizer     sizer
 	marshaler marshaler
 	isptr     bool // elem is pointer typed, thus interface of this type is a direct interface (extension only)
+	deref     bool // dereference the pointer before operating on it; implies isptr
 }
 
 var (
@@ -320,8 +321,11 @@
 
 	// get oneof implementers
 	var oneofImplementers []interface{}
-	if m, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
 		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
 	}
 
 	n := t.NumField()
@@ -407,13 +411,22 @@
 		panic("tag is not an integer")
 	}
 	wt := wiretype(tags[0])
+	if t.Kind() == reflect.Ptr && t.Elem().Kind() != reflect.Struct {
+		t = t.Elem()
+	}
 	sizer, marshaler := typeMarshaler(t, tags, false, false)
+	var deref bool
+	if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 {
+		t = reflect.PtrTo(t)
+		deref = true
+	}
 	e = &marshalElemInfo{
 		wiretag:   uint64(tag)<<3 | wt,
 		tagsize:   SizeVarint(uint64(tag) << 3),
 		sizer:     sizer,
 		marshaler: marshaler,
 		isptr:     t.Kind() == reflect.Ptr,
+		deref:     deref,
 	}
 
 	// update cache
@@ -448,7 +461,7 @@
 
 func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofImplementers []interface{}) {
 	fi.field = toField(f)
-	fi.wiretag = 1<<31 - 1 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
+	fi.wiretag = math.MaxInt32 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
 	fi.isPointer = true
 	fi.sizer, fi.marshaler = makeOneOfMarshaler(fi, f)
 	fi.oneofElems = make(map[reflect.Type]*marshalElemInfo)
@@ -476,10 +489,6 @@
 	}
 }
 
-type oneofMessage interface {
-	XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
-}
-
 // wiretype returns the wire encoding of the type.
 func wiretype(encoding string) uint64 {
 	switch encoding {
@@ -2310,8 +2319,8 @@
 			for _, k := range m.MapKeys() {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)             // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr)          // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)      // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false)   // pointer to value
 				siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				n += siz + SizeVarint(uint64(siz)) + tagsize
 			}
@@ -2329,8 +2338,8 @@
 			for _, k := range keys {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)    // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)    // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false) // pointer to value
 				b = appendVarint(b, tag)
 				siz := keySizer(kaddr, 1) + valCachedSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				b = appendVarint(b, uint64(siz))
@@ -2399,7 +2408,7 @@
 		// the last time this function was called.
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	mu.Unlock()
@@ -2434,7 +2443,7 @@
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2465,7 +2474,7 @@
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err
@@ -2510,7 +2519,7 @@
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, 1) // message, tag = 3 (size=1)
 	}
 	mu.Unlock()
@@ -2553,7 +2562,7 @@
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2591,7 +2600,7 @@
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 		b = append(b, 1<<3|WireEndGroup)
 		if !nerr.Merge(err) {
@@ -2621,7 +2630,7 @@
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	return n
@@ -2656,7 +2665,7 @@
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err
diff --git a/vendor/github.com/golang/protobuf/proto/table_unmarshal.go b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
index ebf1caa..acee2fc 100644
--- a/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
+++ b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go
@@ -136,7 +136,7 @@
 		u.computeUnmarshalInfo()
 	}
 	if u.isMessageSet {
-		return UnmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
+		return unmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
 	}
 	var reqMask uint64 // bitmask of required fields we've seen.
 	var errLater error
@@ -362,46 +362,48 @@
 	}
 
 	// Find any types associated with oneof fields.
-	// TODO: XXX_OneofFuncs returns more info than we need.  Get rid of some of it?
-	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("XXX_OneofFuncs")
-	if fn.IsValid() {
-		res := fn.Call(nil)[3] // last return value from XXX_OneofFuncs: []interface{}
-		for i := res.Len() - 1; i >= 0; i-- {
-			v := res.Index(i)                             // interface{}
-			tptr := reflect.ValueOf(v.Interface()).Type() // *Msg_X
-			typ := tptr.Elem()                            // Msg_X
+	var oneofImplementers []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
+	}
+	for _, v := range oneofImplementers {
+		tptr := reflect.TypeOf(v) // *Msg_X
+		typ := tptr.Elem()        // Msg_X
 
-			f := typ.Field(0) // oneof implementers have one field
-			baseUnmarshal := fieldUnmarshaler(&f)
-			tags := strings.Split(f.Tag.Get("protobuf"), ",")
-			fieldNum, err := strconv.Atoi(tags[1])
-			if err != nil {
-				panic("protobuf tag field not an integer: " + tags[1])
-			}
-			var name string
-			for _, tag := range tags {
-				if strings.HasPrefix(tag, "name=") {
-					name = strings.TrimPrefix(tag, "name=")
-					break
-				}
-			}
-
-			// Find the oneof field that this struct implements.
-			// Might take O(n^2) to process all of the oneofs, but who cares.
-			for _, of := range oneofFields {
-				if tptr.Implements(of.ityp) {
-					// We have found the corresponding interface for this struct.
-					// That lets us know where this struct should be stored
-					// when we encounter it during unmarshaling.
-					unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
-					u.setTag(fieldNum, of.field, unmarshal, 0, name)
-				}
+		f := typ.Field(0) // oneof implementers have one field
+		baseUnmarshal := fieldUnmarshaler(&f)
+		tags := strings.Split(f.Tag.Get("protobuf"), ",")
+		fieldNum, err := strconv.Atoi(tags[1])
+		if err != nil {
+			panic("protobuf tag field not an integer: " + tags[1])
+		}
+		var name string
+		for _, tag := range tags {
+			if strings.HasPrefix(tag, "name=") {
+				name = strings.TrimPrefix(tag, "name=")
+				break
 			}
 		}
+
+		// Find the oneof field that this struct implements.
+		// Might take O(n^2) to process all of the oneofs, but who cares.
+		for _, of := range oneofFields {
+			if tptr.Implements(of.ityp) {
+				// We have found the corresponding interface for this struct.
+				// That lets us know where this struct should be stored
+				// when we encounter it during unmarshaling.
+				unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
+				u.setTag(fieldNum, of.field, unmarshal, 0, name)
+			}
+		}
+
 	}
 
 	// Get extension ranges, if any.
-	fn = reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
+	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
 	if fn.IsValid() {
 		if !u.extensions.IsValid() && !u.oldExtensions.IsValid() {
 			panic("a message with extensions, but no extensions field in " + t.Name())
@@ -1948,7 +1950,7 @@
 // If there is an error, it returns 0,0.
 func decodeVarint(b []byte) (uint64, int) {
 	var x, y uint64
-	if len(b) <= 0 {
+	if len(b) == 0 {
 		goto bad
 	}
 	x = uint64(b[0])