I'm planning to purchase Studio One 3 Artist, and would definitely be buying the VST/AU/Re-Wire Support Add-On. So my question is, if I purchase the Add-On, will it then automatically be available to install in, if I upgrade to future versions of Studio One (V4, V5 etc...)? Or will it be locked to V3 (i.e. do I need to then purchase the Add-On again and again for future versions)?