Floppy Emu (Model A and B) Case

A remix of Blondihacks' [Floppy Emu (Model B) Case](https://www.thingiverse.com/thing:1376359): a case for Steve Chamberlin's (Big Mess O' Wires) [Floppy Emu Disk Emulator for Apple II, Macintosh, and Lisa](http://www.bigmessowires.com/floppy-emu/).

Modifications:

* distribution contains all STLs needed to print case
* case now compatible with the older Model A emulator (SD card) and the current Model B (micro-SD card)
* top now has hold for status LED, larger display window for easier f