Doesn't handle negative numbers

[anilkumarmyla]

I like this library but it doesn't seem to work well for negative numbers

>>> convert_units(Decimal('-149250113536'))
(Decimal('-149250113536'), 'B')
>>> convert_units(Decimal('149250113536'))
(Decimal('139'), 'GiB')

[ofek]

Interesting, thanks for the report! How would you fix?

[anilkumarmyla]

I made a patch in my code to pass in the absolute value if number is negative and prefixed the minus sign at the end, that works for me

[ofek]

Resolved by #12