Release v1.40.0 (#1833)

Signed-off-by: Piotr Piotrowski <piotr@synadia.com>

Author: piotrpio

Diff for: README.md

@@ -23,7 +23,7 @@ A [Go](http://golang.org) client for the [NATS messaging system](https://nats.io
 go get github.com/nats-io/nats.go@latest
 
 # To get a specific version:
-go get github.com/nats-io/nats.go@v1.39.1
+go get github.com/nats-io/nats.go@v1.40.0
 
 # Note that the latest major version for NATS Server is v2:
 go get github.com/nats-io/nats-server/v2@latest

Diff for: nats.go

@@ -47,7 +47,7 @@ import (
 
 // Default Constants
 const (
-	Version                   = "1.39.1"
+	Version                   = "1.40.0"
 	DefaultURL                = "nats://127.0.0.1:4222"
 	DefaultPort               = 4222
 	DefaultMaxReconnect       = 60