Final speedups for Store

Hello VWNC,

  And the TimeProfiler *still* showed tons of string manipulation...
  but I found that while calculating diffs, some Store model used
  ordered collections instead of sets.  I replaced a couple sends of
  copy with a couple sends of asSet, and the time to publish my large
  package went down from ~38 seconds to ~28 seconds (inside the time
  profiler, originally it took ~65 seconds).

  Again, hopefully this helps.

--
Best regards,
 Andres                          mailto:[hidden email]