Shutter Shades for small print bed

Remix of [Customizable Shutter Shades](https://www.thingiverse.com/thing:1603773) for print beds not larger than 120x120mm. This uses a pair of pin plate connectors over the nose bridge which is a little unsightly, but not too bad. On the plus side, you can mix and match different halves.

I made the hinges larger so that you can insert a bit of 1.75mm filament as a hinge pin. Make sure to insert from the top, because I made the bottom hole slightly smaller in order to grip the filament. T