TINY-1204: updated changelog for 4.6.6 release
TINY-1204: updated changelog for 4.6.6 release

TeamupCom/tinymce,FernCreek/tinymce,gencer/tinymce,FernCreek/tinymce,TeamupCom/tinymce,tinymce/tinymce,leofeyer/tinymce,gencer/tinymce,tinymce/tinymce,tinymce/tinymce,FernCreek/tinymce,danielpunkass/tinymce,danielpunkass/tinymce,danielpunkass/tinymce,leofeyer/tinymce