IP addresses sort as floats (192.200 < 192.42)

[Krinkle]

IP addresses currently sort the first chunk as a float.

This bug leads, for example, 192.200.2.3 to sorts before 192.42.2.3, instead of after it.

/* Version: 0.8.1 */

['192.200.2.3','192.42.2.3','192.3.2.1'].sort(naturalSort)
// actual>   ["192.200.2.3", "192.3.2.1",  "192.42.2.3"] 
// expected> ["192.3.2.1",   "192.42.2.3", "192.200.2.3"] 

I ran into this when trying out this module as sorting algorithm for Wikipedia's tablesorter code, but it failed out unit tests.