properties added from one module to another sometimes don't show up

[wkeese]

When moduleX adds properties to moduleY's return value, they show up / don't show up in moduleX's documentation based on which module gets parsed first. Which is alphabetical. See #52 for more info.

(I split this this from #52 to avoid confusion)

[neonstalwart]

i think e8d05e3 from #80 may resolve this but i'm not sure. it would be worth verifying.