Deep Stacking

Adds stacks of stacks to Deadlocks Stacking Beltboxes & Compact Loaders.

Adds a new machine called the Deep Stacker, that can compress deadlocks stacks 7 additional times, allowing you to compress 390 625 items into a single item. Use a standard beltbox for decompression.

Should be compatible with all other addons for DSB&CL.