rjbs/Dist-Zilla — pull request #315 by karenetheridge (2014-05-13 04:30:00+00:00)
Title: skip passing empty hashrefs, arrayrefs to WriteMakefileArgs

This was resulting in ugly prereqs in META.json like:

"prereqs" : {
"build" : {
"requires" : {}
},
"test" : {
"requires" : {}
},
...
},