superlight microquad frame for 8.5mm motors

this frame has mounts for 8.5mm motors and the hubsan h107(C,D,L) flight controller.

I use a zip-tie to secure the battery, which works fairly well.

I fly one of them with a push-motor setup with standard Hubsan Motors and one in the usual motor setup with CL-0820-15 motors. The latter is just insane.

V2: minor changes in the updated version (green in top view) like rounded corners for more durability