Changes:

-No longer derivative of someone elses work, this is based of the original hotkey.
-Smaller than original (by 4 pixels) but larger than v.1.0, I found that the larger icons were nicer to see and since the mod minimizes micro icons werent as necessary.
-Now looks cleaner, works cleaner. Supports two orientations (my favorites) 12x1 and 3x4.
-Buttons invisibilize on minimize to prevent accidental activation.

Known Issues:

-If you have a minimized hotbar on startup, the buttons will not be invisible, as it's the minimize key press that does it. Small issue, I know...