Investigate multiprocessing as speedup for Inventory instantiation and `data_file` generation

[bskinn]

The importing of object.inv data lines to DataObj instances, and the dumping of inventory artifact data lines, are right now simple, serial for loops. Might get appreciable speedup by parallelizing.

[bskinn]

Sprinkling this in various issues: rapidfuzz as a fuzzywuzzy alternative.