Update vendor yaegashi/msgraph.go to v0.1.2 (2)

vendor/github.com/rickb777/date/period/marshal.go

@@ -0,0 +1,32 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package period
+
+// MarshalBinary implements the encoding.BinaryMarshaler interface.
+// This also provides support for gob encoding.
+func (period Period) MarshalBinary() ([]byte, error) {
+	// binary method would take more space in many cases, so we simply use text
+	return period.MarshalText()
+}
+
+// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface.
+// This also provides support for gob encoding.
+func (period *Period) UnmarshalBinary(data []byte) error {
+	return period.UnmarshalText(data)
+}
+
+// MarshalText implements the encoding.TextMarshaler interface for Periods.
+func (period Period) MarshalText() ([]byte, error) {
+	return []byte(period.String()), nil
+}
+
+// UnmarshalText implements the encoding.TextUnmarshaler interface for Periods.
+func (period *Period) UnmarshalText(data []byte) (err error) {
+	u, err := Parse(string(data))
+	if err == nil {
+		*period = u
+	}
+	return err
+}