* Add a .join() method for a more explicit joining than /
* Return values where possible
* Make glob an iterator
* Remove checks for versions of Python we don't support
* Add a write() function to make it simple to write some text
into a file
* Add a touch() function to make it simple to ensure a file
exists
* Better output with the bare asserts we use throughout the tests
* Function fixtures are pretty nice, especially as a way to
start a background server or create an isolated virtualenv