Raspberry Pi modified end cap

This is a modification to the excellent well ventilated case on which its based.

The issue with the original design is that the end-cap does not help hold the Raspberry Pi. When all put together, the Pi moves around loosely making the case unsuitable unless the Pi is somehow attached.

This end cap adds tabs which align with the Pi's mounting holes to securely hold the Pi in place. Tested with Raspberry Pi 3B and 3B+ but should work for any Pi that this case works with since the screw mount