1.5.4

• Compatibility: Fix for old single widgets (remove notice). #37 (props @westonruter)
• Tested with WP 5.2.

1.5.3

• Compatibility: dFactory Responsive Lightbox widget option. #33
• Tested with WP 5.0.

1.5.2.1

• i18n: Remove sv_SE translation from the plugin directory. It's 95% on translate.wordpress.org and accepted as the better version. #23
• Documentation: Readme & Wiki. #31
• Maintenance: Fix more codestyle issues. https://codeclimate.com/github/cleverness/widget-css-classes/issues
• Compatibility: Tested with WordPress 4.9

1.5.2

• Enhancement: Make translations of core widget classes optional instead of default. #29
• Enhancement: Allow vertical resize of defined classes box for CSS3 compatible browsers.

1.5.1

• Fix: Widget Logic widget_content filter compatibility. #27
• Enhancement: Make uninstall script compatible with network installations.

1.5.0

• Feature: Option to try and fix the widget parameters if they are invalid. #24
• Feature: Option to remove duplicate classes. #25
• Enhancement: Sort classes based on the predefined classes on the frontend by default. #19
• Enhancement: Classes filter for frontend (for sorting or modifications). #19
  • widget_css_classes: modify all classes added by this plugin.
  • widget_css_classes_custom: modify custom input classes.
• Enhancement: Plugin settings filter (widget_css_classes_set_settings), overwrites user settings. #16
• Enhancement: Plugin default settings filter (widget_css_classes_default_settings). #4
• Enhancement: Capability filters for form fields. #21
  • widget_css_classes_id_input_capability: ID input
  • widget_css_classes_class_input_capability: classes input
  • widget_css_classes_class_select_capability: predefined classes select (also hides classes input if invalid)
• Compatibility: WP External Links. #17, thanks to Victor @freelancephp
• Fix: Form wrapper div style. #18, thanks to Chuck Reynolds @ryno267
• Fix: Enable sortable input selection (IE-11 fix). #20
• UI: Enhance setting page JavaScript and remove relCopy library dependency.
• i18n: Remove Dutch and Russian languages from plugin distribution (available on translate.wordpress.org). #23
• Started using TravisCI and CodeClimate. #15

Detailed info: PR on GitHub