fix Routing incorrectly matches documents issue and fix for #63

[dtognazzini]

This fix is dependent on the order of the parameters to window.change_to and the order of the routes yielded to the internal blocks in recognizes?

Here's a failing test that highlights the parameter order issue. This test needs to pass.

Another test should be written to the order in which routes are yielded.

[dtognazzini]

After some more reading and experimentation, I see how these changes address the issue. As we discussed via chat, please add comments documenting the "why" of your changes and add a test case covering all the permutations. Thanks!

[dtognazzini]

Addresses issue #63