update version to 0.1.7 (#55)

Author: huebnerr

driver.go

@@ -1,6 +1,6 @@
 package vertigo
 
-// Copyright (c) 2019 Micro Focus or one of its affiliates.
+// Copyright (c) 2019-2020 Micro Focus or one of its affiliates.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -46,7 +46,7 @@ type Driver struct{}
 
 const (
 	driverName      string = "vertica-sql-go"
-	driverVersion   string = "0.1.5"
+	driverVersion   string = "0.1.7"
 	protocolVersion uint32 = 0x00030008
 )