Diffs for arrays of strings can be pretty confusing

If you do t.deepEqual (and I think also t.is) on two arrays containing strings. If there are a large amount of strings and they only differ slightly the output is very confusing. It appears that as soon as a new entry in an array has shifted the items after it across, AVA text diffs every single entry against the same index in the original array.

e.g: An array with 219 strings that has had 6 additions and 1 deletion: AVA diff: https://travis-ci.org/lukechilds/window/jobs/266859856 GitHub diff: https://github.com/lukechilds/window/pull/7/commits/6ecbade39561cf705ddc2833cbc3b93e2abfb223