fix(go.sum): update ResolveSpec dependency to v1.0.87

vendor/mellium.im/sasl/doc.go

@@ -0,0 +1,15 @@
+// Copyright 2016 The Mellium Contributors.
+// Use of this source code is governed by the BSD 2-clause
+// license that can be found in the LICENSE file.
+
+// Package sasl implements the Simple Authentication and Security Layer (SASL)
+// as defined by RFC 4422.
+//
+// Most users of this package will only need to create a Negotiator using
+// NewClient or NewServer and call its Step method repeatedly.
+// Authors implementing SASL mechanisms other than the builtin ones will want to
+// create a Mechanism struct which will likely use the other methods on the
+// Negotiator.
+//
+// Be advised: This API is still unstable and is subject to change.
+package sasl // import "mellium.im/sasl"