Started 4.1.1 development.
Changed default BACKSPACE/DEL behaviour at the boundary of a table call so it doesn't change the selection.
Changelog entry.
Merge branch 't/10172'
Error thrown when destroying an instance in parallel with a mouseup event.
Changelog entry.
Merge branch 't/10219b'
Use for loop to iterate over array, check existance
Simplified the loop. Fixed code-style.
Changelog entry.
Merge branch 't/10265'
Fixed: undo and redo enabled when instance loaded, switching between modes and read-only state.
Updated comment.
Simplfied the code updating commands so they are correctly updated in all cases.
Merge branch 't/10249b'
Updated changelog.
Added missing documentation for editor.window/document and readonly flags for editor's properties.
API docs changes in ckeditor.js and editor.js.
Do not use for-in loop to iterate over array.
To unlock undo manager unlock() has to be executed number of times lock() has been.