Improved Magic Bullet Blender Cup Lid

Taking in feedback from my previous iteration of Magic Bullet Blender Cup Lid. I printed off a bunch that have near-daily use in my household. Also upgraded my printer to an Ender 3. Will test soon.

Improvements:
- slight curve to the bottom edge to help peel it off the bed (I know flat parts suck to get off)
- versions with and without straw hole
- ridges on the sides to help with grip when turning