Bump the version to 3.1.1.

3.1.1 drops support for Emacs 24 and Bash 3. It also includes a fix for
Bash 5.1 and later.

Author: szermatt

bash-completion.el

@@ -4,7 +4,7 @@
 
 ;; Author: Stephane Zermatten <szermatt@gmx.net>
 ;; Maintainer: Stephane Zermatten <szermatt@gmail.com>
-;; Version: 3.1.0
+;; Version: 3.1.1
 ;; Keywords: convenience, unix
 ;; URL: http://github.com/szermatt/emacs-bash-completion
 ;; Package-Requires: ((emacs "25.3"))