Throw really specific error when attempting to use chai-jQuery assertions on a non DOM object

[brian-mann]

Currently these fall through and we get an odd error message.

expect("foo").to.have.class("bar")

[brian-mann]

Now we throw a very specific error message and even display the assertion failure!

Took a bit of effort but worth it!

[brian-mann]

The code for this is done, but this has yet to be released. We'll update the issue and reference the changelog when it's released.

[brian-mann]

Fixed in 0.20.0