Display more information for "BeEquivalentTo"

[DblK]

When I run a test with:

Expect(XXXX).Should(BeEquivalentTo(expected))

I had the following output with a test failed

Expected
          <map[string]interface {} | len:2>: {"super": "hero", "maxHP": 500000}
      to be equivalent to
          <map[string]interface {} | len:2>: {"super": "hero", "maxHP": 500000}

This is true, but I had a hard time figured out what was the real problem.
My property maxHP has been an int for expected and a float64 by variable XXXX.

I would be nice, if an additional message could be provided to point out the mismatch in type.

Anyway, I like your product!

[blgm]

This is very similar to our oldest issue #161. But thanks for raising it again as it's still unresolved.