version() and isIP() returning unexpected results.

[STLMikey]

Forgot to sanitize an input, and ended up passing the string "1" to version() and isIP().

version("1"); // returns 4
isIP("1"); // returns true

[amirbardugo]

@STLMikey the issue is in ipaddr.js apparently whitequark/ipaddr.js#44
they have another function that ignore it @keverw anyway to switch to this one?
ipaddr.IPv4.isValidFourPartDecimal

[keverw]

I decided to upgrade the build scripts, and did this as one of the first fixes. Will be in the future 3.0 release!