New Features:

• #9829: Advanced Content Filter - data and features activation based on editor configuration.

  Brand new data filtering system that works in 2 modes:

  • Based on loaded features (toolbar items, plugins) - the data will be filtered according to what the editor in its current configuration can handle.
  • Based on config.allowedContent rules - the data will be filtered and the editor features (toolbar items, commands, keystrokes) will be enabled if they are allowed.

  See the datafiltering.html sample, guides and CKEDITOR.filter API documentation.

• #9387: Reintroduced Shared Spaces - the ability to display toolbar and bottom editor space in selected locations and to share them by different editor instances.

• #9907: Added the contentPreview event for preview data manipulation.

• #9713: Introduced the Source Dialog plugin that brings raw HTML editing for inline editor instances.

• Included in #9829: Introduced new events, toHtml and toDataFormat, allowing for better integration with data processing.

• #9981: Added ability to filter htmlParser.fragment, htmlParser.element etc. by many htmlParser.filters before writing structure to an HTML string.

• Included in #10103:

  • Introduced the editor.status property to make it easier to check the current status of the editor.
  • Default command state is now CKEDITOR.TRISTATE_DISABLE. It will be activated on editor.instanceReady or immediately after being added if the editor is already initialized.

• #9796: Introduced <s> as a default tag for strikethrough, which replaces obsolete <strike> in HTML5.