Support output in gibibytes (aka binary prefixes)

[Mart-Bogdan]

Currently, app outputs in weird metric giga-bytes.

Would be cool to have a config switch for binary output, like the one you get with du -h.
The powers of 1024, not powers of 1000.

example:

$ du -h
5.2G    .

>ds

Analysing: F:\kek
└── 100.00% [5.56 GB] ── kek

P.S. in UNIX it's common to use notion of G M K for such numbers and GB MB KB for metric ones.

GiB, MiB, KiB is also acceptable for output of powers of 1024.