MicroSD case

This is a fully re-modeled build of a MicroSD case inspired by Kozalakis's one, borrowing some ideas from Kroki's remix of it. I didn't actually use any of their source, rather building from scratch using SD/MicroSD card dimensions.

This version relies on fairly close tolerances, so it may be a bit temperamental on some 3D printers (Details below).

The main differences from the other two:

* The case holds 10 MicroSD cards (2 x 5)
* There are registration tabs in the slots, so the SD adapter lid should only go in with the label side out and the connectors on the inside of the box.
* The SD adapter should register with the card retention tab on the inside of the slot (The original design used the write-protect tab slot to register the card). Depending on the material used and tolerances, this may be tight or wear out after a while.
* The SD adapter can be pushed-out from the connector end (the main reason for Kroki's remix).

The model is intended to be printed with the not