tablesorter 2.0.5 columns with alphanumeric values and leading digits

tablesorter 2.0.5 columns with alphanumeric values and leading digits

Do not sort properly.

Example:

data is a measurement of days since <event>
data:
152d 12h 39m
149d 13h 33m
17d 17h 17m
358d 2h 56m

sort as 
149d 13h 33m
152d 12h 39m
17d 17h 17m
358d 2h 56m

is there a way to make it sort based on the numeric values alone ?