As the maintainer of Jack of All Things, I recommend against using this person's code. Apparently (s)he is not aware that warnings are normal part of extensions and can be ignored and they are proposing removing support for other extensions in order to get rid of a warning that has 0 effect on the functioning of the extension.
The result of the changes that this person is proposing will be loss of support for FloatingTabs and will have no gain whatsoever.
To wrandalljr4: If you are having some issue with Jack of All Things, please let me know and I will make my best effort to help, fix, or find a work-around for you. Please do not make public posts about code changes without first consulting the maintainer of the extension.

