Minor suggestion: connect_to_wifi() should probably return the wlan object, rather than ip address.

[Nikorasu]

This is just something I've been running into lately, in terms of usability.. There tends to be a lot of moments where I need a quick reference to the full wlan object, for access to various config options, and I've found the quickest solution was to just modify the connect_to_wifi function so it returns the full thing. Otherwise I end up not using connect_to_wifi, and miss out on the already setup loggin. heh
Edit: Just noticed one of the branches added a get_ip_address function for similar reasons. I prefer returning the whole object, so just gonna make my own fork, since I've done a lot of error handling too..