tinymce/tinymce — pull request #301 by PacificMorrowind (2014-01-06 00:54:05+00:00)
Title: new init option: style_formats_merge

see http://www.tinymce.com/forum/viewtopic.php?id=33238 for commentary
if style_formats_merge is set to true in tinyMCE init, will merge custom styles instead of overwriting default style options.