Case for Waveshare 7.5" e-paper weather display

This is a remix of the case from [Thing 3996613](https://www.thingiverse.com/thing:3996613) by [dimock](https://www.thingiverse.com/dimock). With the exception of the battery, I used the components listed in dimock's description. I also do not use the optional push button listed there. Instead, I make use of the button on the TPL5111 breakout board.

The battery I used is [Polymer Lithium Ion Battery - 1000mAh](https://www.sparkfun.com/products/retired/339). Unfortunately this is now unavailable, but [Lithium Ion Battery - 1250mAh](https://www.sparkfun.com/products/18286) should also fit this design as currently posted.

All the parameters and dimensions used in the design are in the spreadsheet embedded in the FreeCAD file (Waveshare_7_5_T7_r5.FCStd). I'm sorry, but my naming conventions are not always intuitive or consistent. I'm still learning how to do this stuff.

The screw holes are sized M2x6 screws.

The LEDs on the various modules are visible through the ePaper d