diff --git a/vendor/go.uber.org/zap/field.go b/vendor/go.uber.org/zap/field.go
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+// Copyright (c) 2016 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package zap
+
+import (
+	"fmt"
+	"math"
+	"time"
+
+	"go.uber.org/zap/zapcore"
+)
+
+// Field is an alias for Field. Aliasing this type dramatically
+// improves the navigability of this package's API documentation.
+type Field = zapcore.Field
+
+// Skip constructs a no-op field, which is often useful when handling invalid
+// inputs in other Field constructors.
+func Skip() Field {
+	return Field{Type: zapcore.SkipType}
+}
+
+// Binary constructs a field that carries an opaque binary blob.
+//
+// Binary data is serialized in an encoding-appropriate format. For example,
+// zap's JSON encoder base64-encodes binary blobs. To log UTF-8 encoded text,
+// use ByteString.
+func Binary(key string, val []byte) Field {
+	return Field{Key: key, Type: zapcore.BinaryType, Interface: val}
+}
+
+// Bool constructs a field that carries a bool.
+func Bool(key string, val bool) Field {
+	var ival int64
+	if val {
+		ival = 1
+	}
+	return Field{Key: key, Type: zapcore.BoolType, Integer: ival}
+}
+
+// ByteString constructs a field that carries UTF-8 encoded text as a []byte.
+// To log opaque binary blobs (which aren't necessarily valid UTF-8), use
+// Binary.
+func ByteString(key string, val []byte) Field {
+	return Field{Key: key, Type: zapcore.ByteStringType, Interface: val}
+}
+
+// Complex128 constructs a field that carries a complex number. Unlike most
+// numeric fields, this costs an allocation (to convert the complex128 to
+// interface{}).
+func Complex128(key string, val complex128) Field {
+	return Field{Key: key, Type: zapcore.Complex128Type, Interface: val}
+}
+
+// Complex64 constructs a field that carries a complex number. Unlike most
+// numeric fields, this costs an allocation (to convert the complex64 to
+// interface{}).
+func Complex64(key string, val complex64) Field {
+	return Field{Key: key, Type: zapcore.Complex64Type, Interface: val}
+}
+
+// Float64 constructs a field that carries a float64. The way the
+// floating-point value is represented is encoder-dependent, so marshaling is
+// necessarily lazy.
+func Float64(key string, val float64) Field {
+	return Field{Key: key, Type: zapcore.Float64Type, Integer: int64(math.Float64bits(val))}
+}
+
+// Float32 constructs a field that carries a float32. The way the
+// floating-point value is represented is encoder-dependent, so marshaling is
+// necessarily lazy.
+func Float32(key string, val float32) Field {
+	return Field{Key: key, Type: zapcore.Float32Type, Integer: int64(math.Float32bits(val))}
+}
+
+// Int constructs a field with the given key and value.
+func Int(key string, val int) Field {
+	return Int64(key, int64(val))
+}
+
+// Int64 constructs a field with the given key and value.
+func Int64(key string, val int64) Field {
+	return Field{Key: key, Type: zapcore.Int64Type, Integer: val}
+}
+
+// Int32 constructs a field with the given key and value.
+func Int32(key string, val int32) Field {
+	return Field{Key: key, Type: zapcore.Int32Type, Integer: int64(val)}
+}
+
+// Int16 constructs a field with the given key and value.
+func Int16(key string, val int16) Field {
+	return Field{Key: key, Type: zapcore.Int16Type, Integer: int64(val)}
+}
+
+// Int8 constructs a field with the given key and value.
+func Int8(key string, val int8) Field {
+	return Field{Key: key, Type: zapcore.Int8Type, Integer: int64(val)}
+}
+
+// String constructs a field with the given key and value.
+func String(key string, val string) Field {
+	return Field{Key: key, Type: zapcore.StringType, String: val}
+}
+
+// Uint constructs a field with the given key and value.
+func Uint(key string, val uint) Field {
+	return Uint64(key, uint64(val))
+}
+
+// Uint64 constructs a field with the given key and value.
+func Uint64(key string, val uint64) Field {
+	return Field{Key: key, Type: zapcore.Uint64Type, Integer: int64(val)}
+}
+
+// Uint32 constructs a field with the given key and value.
+func Uint32(key string, val uint32) Field {
+	return Field{Key: key, Type: zapcore.Uint32Type, Integer: int64(val)}
+}
+
+// Uint16 constructs a field with the given key and value.
+func Uint16(key string, val uint16) Field {
+	return Field{Key: key, Type: zapcore.Uint16Type, Integer: int64(val)}
+}
+
+// Uint8 constructs a field with the given key and value.
+func Uint8(key string, val uint8) Field {
+	return Field{Key: key, Type: zapcore.Uint8Type, Integer: int64(val)}
+}
+
+// Uintptr constructs a field with the given key and value.
+func Uintptr(key string, val uintptr) Field {
+	return Field{Key: key, Type: zapcore.UintptrType, Integer: int64(val)}
+}
+
+// Reflect constructs a field with the given key and an arbitrary object. It uses
+// an encoding-appropriate, reflection-based function to lazily serialize nearly
+// any object into the logging context, but it's relatively slow and
+// allocation-heavy. Outside tests, Any is always a better choice.
+//
+// If encoding fails (e.g., trying to serialize a map[int]string to JSON), Reflect
+// includes the error message in the final log output.
+func Reflect(key string, val interface{}) Field {
+	return Field{Key: key, Type: zapcore.ReflectType, Interface: val}
+}
+
+// Namespace creates a named, isolated scope within the logger's context. All
+// subsequent fields will be added to the new namespace.
+//
+// This helps prevent key collisions when injecting loggers into sub-components
+// or third-party libraries.
+func Namespace(key string) Field {
+	return Field{Key: key, Type: zapcore.NamespaceType}
+}
+
+// Stringer constructs a field with the given key and the output of the value's
+// String method. The Stringer's String method is called lazily.
+func Stringer(key string, val fmt.Stringer) Field {
+	return Field{Key: key, Type: zapcore.StringerType, Interface: val}
+}
+
+// Time constructs a Field with the given key and value. The encoder
+// controls how the time is serialized.
+func Time(key string, val time.Time) Field {
+	return Field{Key: key, Type: zapcore.TimeType, Integer: val.UnixNano(), Interface: val.Location()}
+}
+
+// Stack constructs a field that stores a stacktrace of the current goroutine
+// under provided key. Keep in mind that taking a stacktrace is eager and
+// expensive (relatively speaking); this function both makes an allocation and
+// takes about two microseconds.
+func Stack(key string) Field {
+	// Returning the stacktrace as a string costs an allocation, but saves us
+	// from expanding the zapcore.Field union struct to include a byte slice. Since
+	// taking a stacktrace is already so expensive (~10us), the extra allocation
+	// is okay.
+	return String(key, takeStacktrace())
+}
+
+// Duration constructs a field with the given key and value. The encoder
+// controls how the duration is serialized.
+func Duration(key string, val time.Duration) Field {
+	return Field{Key: key, Type: zapcore.DurationType, Integer: int64(val)}
+}
+
+// Object constructs a field with the given key and ObjectMarshaler. It
+// provides a flexible, but still type-safe and efficient, way to add map- or
+// struct-like user-defined types to the logging context. The struct's
+// MarshalLogObject method is called lazily.
+func Object(key string, val zapcore.ObjectMarshaler) Field {
+	return Field{Key: key, Type: zapcore.ObjectMarshalerType, Interface: val}
+}
+
+// Any takes a key and an arbitrary value and chooses the best way to represent
+// them as a field, falling back to a reflection-based approach only if
+// necessary.
+//
+// Since byte/uint8 and rune/int32 are aliases, Any can't differentiate between
+// them. To minimize surprises, []byte values are treated as binary blobs, byte
+// values are treated as uint8, and runes are always treated as integers.
+func Any(key string, value interface{}) Field {
+	switch val := value.(type) {
+	case zapcore.ObjectMarshaler:
+		return Object(key, val)
+	case zapcore.ArrayMarshaler:
+		return Array(key, val)
+	case bool:
+		return Bool(key, val)
+	case []bool:
+		return Bools(key, val)
+	case complex128:
+		return Complex128(key, val)
+	case []complex128:
+		return Complex128s(key, val)
+	case complex64:
+		return Complex64(key, val)
+	case []complex64:
+		return Complex64s(key, val)
+	case float64:
+		return Float64(key, val)
+	case []float64:
+		return Float64s(key, val)
+	case float32:
+		return Float32(key, val)
+	case []float32:
+		return Float32s(key, val)
+	case int:
+		return Int(key, val)
+	case []int:
+		return Ints(key, val)
+	case int64:
+		return Int64(key, val)
+	case []int64:
+		return Int64s(key, val)
+	case int32:
+		return Int32(key, val)
+	case []int32:
+		return Int32s(key, val)
+	case int16:
+		return Int16(key, val)
+	case []int16:
+		return Int16s(key, val)
+	case int8:
+		return Int8(key, val)
+	case []int8:
+		return Int8s(key, val)
+	case string:
+		return String(key, val)
+	case []string:
+		return Strings(key, val)
+	case uint:
+		return Uint(key, val)
+	case []uint:
+		return Uints(key, val)
+	case uint64:
+		return Uint64(key, val)
+	case []uint64:
+		return Uint64s(key, val)
+	case uint32:
+		return Uint32(key, val)
+	case []uint32:
+		return Uint32s(key, val)
+	case uint16:
+		return Uint16(key, val)
+	case []uint16:
+		return Uint16s(key, val)
+	case uint8:
+		return Uint8(key, val)
+	case []byte:
+		return Binary(key, val)
+	case uintptr:
+		return Uintptr(key, val)
+	case []uintptr:
+		return Uintptrs(key, val)
+	case time.Time:
+		return Time(key, val)
+	case []time.Time:
+		return Times(key, val)
+	case time.Duration:
+		return Duration(key, val)
+	case []time.Duration:
+		return Durations(key, val)
+	case error:
+		return NamedError(key, val)
+	case []error:
+		return Errors(key, val)
+	case fmt.Stringer:
+		return Stringer(key, val)
+	default:
+		return Reflect(key, val)
+	}
+}