A few months ago I handed over the EWSEditor project to Dan Bagley from Dan's WebDav 101. He promptly added a TON of new features and published a new release. Thanks, Dan!
To read more about the December 2013 update for EWSEditor check out Dan's post: http://blogs.msdn.com/b/webdav_101/archive/2013/12/31/december-2013-releases-of-ewseditor-1-7-3-27070-and-1-7-4-31181.aspx
To get your hands on the new build go to: http://ewseditor.codeplex.com