Update go dependencies

vendor/github.com/ajg/form/form.go

@@ -0,0 +1,14 @@
+// Copyright 2014 Alvaro J. Genial. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package form implements encoding and decoding of application/x-www-form-urlencoded data.
+package form
+
+const (
+	implicitKey = "_"
+	omittedKey  = "-"
+
+	defaultDelimiter = '.'
+	defaultEscape    = '\\'
+)