Add Settings api, and xpathCompression setting for Android

Same as last, time, you need to use my fork of wd.js to run the tests...
They do come with a cost, but also very real benefits, such as keeping your primary codebase small and making it easier to test each contributing piece well.

At any rate, this is the stance we've adopted all along. I'm not opposed to changing it or talking further about it, but it should probably be its own conversation.