Planet Bike rear light mount for European rack 50mm mounting holes

6/20/2018 - Uploaded version 3. This makes the release tab wider for strength. I also rotated to print flat on it's back when slicing in Cura which results in a tough overhangs but my settings seemed to handle it ok.

6/12/2018 - After about 10 on/off cycles my release tab snapped right off :( I'll be making the tab thicker in OpenSCAD and printing slower for better layer adhesion. Additionally I will try to scrounge up some flush mount bolts so that the mount is subject to less flexing when t