I activated your plugin in my new blog and get following error as soon as its activated :
Warning: Cannot modify header information - headers already sent by (output started at /home/mysite/public_html/trending/wp-content/plugins/improved-gd-image-editor/improved-gd-editor.php:2) in /home/mysite/public_html/trending/wp-includes/option.php on line 571
No changes made to source files. But i'm using a theme that streams (or tries) images and i'm getting an error in the class-wp-image-editor-gd.php file for some of them. That's why i tried to add your plugin.
What do you think?