Add a new "parts" argument to restrict output
Merge pull request #2 from tomhukins/master

Add a new "parts" argument
Changed 'parts' parameter name to 'significant_units' and added a couple extra tests for it

NOTE: Might still change the name, so i'm holding off on releasing to
cpan until i hear back from the person who submitted this patch
Incremented version to 0.61
Add 'ja' locale