-0.XXX is read incorrectly (without the 'negative')

[Adrian Setyadi]

The negative is not read when -1 < number < 0.

-0.042.humanize
#=> "zero point zero four two"
-0.42.humanize
#=> "zero point four two"

It should behave like this, right?:

-0.042.humanize
#=> "negative zero point zero four two"
-0.42.humanize
#=> "negative zero point four two"