Parsing time ago incorrectly

[Mottie]

console.log(Date.parse('now'));
console.log(Date.parse('12 minutes ago'));
console.log(Date.parse('13 minutes ago'));

Fri May 19 2017 10:55:18 GMT-0500 (Central Daylight Time)
Fri May 19 2017 10:43:18 GMT-0500 (Central Daylight Time)
Fri May 19 2017 10:54:18 GMT-0500 (Central Daylight Time)

It appears that only the 1 from 13 is being parsed.

Possibly related to #25?