Add support for escaping while Caps Lock is on?

I just started using evil-escape as an alternative to my old setup to do the same thing using key-chord mode.

There is one thing I used to have that I no longer do, though, which is the ability to return to evil-normal-state regardless of whether Caps Lock is on.

This would be achievable very simply if #64 were implemented, but it is technically a different feature.