Raspberry Pi 2/3/4 case for Pegboard

This is a remix of kwh32901's Pegboard Mounted Raspberry Pi B+/2/3 Sleeve, adding support for the Raspberry Pi 4. I opened the case up so that a Raspberry Pi 4 with heatsinks can slip in. I also expanded the HDMI opening so that there's room for the Pi 4's dual micro HDMI ports.

The Pi 3 still fits, too.