Increasing the size of the text area (code writing section in the plugin editor)

Your plugin is amazing. It just needs a small change in the admin section.
The place to write the code in your plugin is very small and it is difficult to see more than a few lines and you have to scroll constantly.
Just include this small code in the plugin itself to see what a small but big change is made!

.CodeMirror {
    resize: vertical;
}