root: bump version to v0.13.1

Author: guggero

cmd/chantools/root.go

@@ -30,7 +30,7 @@ const (
 	// version is the current version of the tool. It is set during build.
 	// NOTE: When changing this, please also update the version in the
 	// download link shown in the README.
-	version = "0.13.0"
+	version = "0.13.1"
 	na      = "n/a"
 
 	// lndVersion is the current version of lnd that we support. This is