duplicate_file_speeds

## Single pass

$ time bin/rivalry ..
-- Size  : 299 MB
-- Count : 1456 files
-- Dupes : 301 files

real  0m2.604s
user	0m2.435s
sys	0m0.163s

## Two pass

$ time bin/rivalry ..
-- Total Size  : 299 MB
-- Total Count : 2072 files
-- Similar     : 1213 files with the same size
-- Dupes Count : 917 files

real  0m0.681s
user	0m0.591s
sys	0m0.086s

## Two pass is much faster as long as a certain threshhold of identically sized files isn't reached
## Apparently my file counts were also wrong in the 1-pass algo, oops

$ time bin/rivalry ~/Music/
Scanning all files...
-- Total Size  : 74 GB
-- Total Count : 8644 files

Determining duplicates...
-- Dupes Count : 5092 files

real  5m20.102s
user	4m46.608s
sys	0m17.296s