Thank you! I've just uploaded a version for GMS1. Haha, that's always a tough choice. But feel completely free to just use it and go ahead with your game, especially if you're relatively new to coding - this one just about did my head in to make with all the effects and optional arguments and blargh.
Too many people hit roadblocks in their development and quit projects - I think you should just use whatever you can to make progress. And feel totally free to contact me if you have any troubles!