TINY-2721: Sync'd the changelog with 5.x
TINY-2721: Sync'd the changelog with 5.x

TeamupCom/tinymce,TeamupCom/tinymce,tinymce/tinymce,tinymce/tinymce,FernCreek/tinymce,tinymce/tinymce,FernCreek/tinymce,FernCreek/tinymce