wq.io 0.2.0

API Improvements

• Better handling of Excel files in which data doesn't necessarily start on the second row.
• New make_io() function which can be used to mix the provided loader, parser, and optionally mapper classes together into a usable IO class. The default mapper is TupleMapper.
• New load_file() function will attempt to automatically determine which loaders and parsers to use and create an IO class instance on-the-fly.