Remove shebang
Get rid of debug print statements
Make the assumption that we're using utf-8
No longer use MozillaCookieJar by default

This is a backwards-incompatible change. The MediaWiki object can accept
any type of CookieJar now, and it uses FileCookieJar by default when
given a filename. You can use any type of CookieJar by passing it to the
__init__ method.
Allow sending requests as GET instead of POST
Add first test suite (in progress)