If you override the theme functions, review them since some of them changed. Many changes were made to the module, specially to the textfield component. Some changes may affect your site, so be careful with this on production sites.
New Features
Now you can add Embedded videos.
Imagecache is no longer a dependency but it is highly recommended.
Fixed file validation, for both image and file plugin.
Added new settings page.
This version comes without a uninstaller, if you uninstall you'll have to remove the variables manually.
Added new icons for image, file, textfield and link, if you want to help me out with better icons, please do.