adds half-baked queryInterface, connect, and their dependencies
adds __init__.py for convenience
extends queryInterface; provides more direct access to profile XML
WindowsWifi.connect() now typed properly, seems to work
improves clarity
Updates TODO.txt

Moves WlanQueryInterface, WlanConnect, and WlanDisconnect to work in progress. These work for some purposes but are incomplete and lack tests.
Merge pull request #1 from jnelson/master

Merging new features.