Upgraded HackRF PortaPack H4/H4M Case

This is the ultimate HackRF H4M case with many improvements:
 

• Designed for 3d printing, with larger tolerances than the original case (which was made for injection molding with very tight tolerances)
   
• Added EXT - MIC and ON - OFF text on the front
   
• Moved and improved the readability of existing text
   
• Added speaker holes
   
• Included a version without the two bottom clock SMA ports for the Clifford Heath variant
   
• And some other minor improvements 
   
• Used higher poly count STL files

A version powered by a replaceable 18650 Li-ion cell is also available here.

Bigger tolerances for 3d printing (the original model was designed for injection molding) added and changed some text to make it more readable, added speaker holes, and many other minor improvements.