This plugin has changed my way of playing minecraft. Nowadays, I wouldn´t know how to play minecraft without it. But there is a bug you should fix, if you open your inventory, and throw something directly (using "q" by default, or "control + q") the ability you have bounded gets activated.
Example. If you have bounded firejet, and you open your inventory, throwing something directly with q or control + q, you get launched with firejet.