Not showing empty matched arrays and hashes in differences

[locochris]

Actual behaviour:

puts DiffMatcher::difference({:a=>1,:b=>2,:c=>[]}, {:a=>2,:b=>2,:c=>[]})
{
  :a=>- 1+ 2,
  :b=>2
}
Where, - 1 missing, + 1 additional

puts DiffMatcher::difference({:a=>1,:b=>2,:c=>{}}, {:a=>2,:b=>2,:c=>{}})
{
  :a=>- 1+ 2,
  :b=>2
}
Where, - 1 missing, + 1 additional

Expected behaviour:

puts DiffMatcher::difference({:a=>1,:b=>2,:c=>[]}, {:a=>2,:b=>2,:c=>[]})
{
  :a=>- 1+ 2,
  :b=>2,
  :c=>[]
}
Where, - 1 missing, + 1 additional

puts DiffMatcher::difference({:a=>1,:b=>2,:c=>{}}, {:a=>2,:b=>2,:c=>{}})
{
  :a=>- 1+ 2,
  :b=>2,
  :c=>{}
}
Where, - 1 missing, + 1 additional