I have released Contact Form 7 2.4.5. It includes some bug fixes and translation updates.
- Fixed the bug that makes it not accept “0” value as watermark.
- Fixed too much normalization to form-tag shortcode with content.
- Fixed wrong regexp pattern for form-tag shortcode with content.
- Check $_POST of checkboxes and select menus to avoid warnings.
- Use proper action hook for enqueueing scripts: wp_enqueue_scripts and admin_enqueue_scripts.
- Bundled jquery.form has been updated to 2.72.
- Translations for Czech (Tomas Vesely) has been updated.