Upgrade requests
Bump version to 0.6.9
Update requests
Fix Makefile
Refactor and document the handling of empty batch responses
Add compatibility for legacy errors in GraphAPI#batch.
Nitpicking
Document the handling of Facebook's legacy error format
Return the request that produced the error upon receiving exceptions from GraphAPI#batch.
Refactor mocks
Avoiding single-file egg generation
Removing the maximum limit on the requests dep

Having a maximum version that does not even exist today and thus cannot even
possibly break facepy is quite bad.

If requests decides to jump to 1.0 (or to any version greater than the
artificial maximum imposed in the setup), it does not necessarily mean that it
will break facepy.

In fact, in a project depending on a modern requests and facepy, installing
facepy after having installed a modern version of requests will probably remove
the new version of requests and will install the artificial maximum version
imposed by facepy.

If a modern version of requests breaks facepy, a bug will be filled and a fix
issued. Not the other way around...
Refactoring the extraction of the data dict from the signed request

It's quite useful to have a classmethod publicly accessible that can extract
the data dict from the signed request.

This is quite useful for an external library or app that needs to access the
data but does not want to deal with the whole SignedRequest object.
Simplifying the calculation of the padding for a base64-encoded string
Minimal refactor and cleaning up of get_fb_data()
Making GraphAPI url overridable to easily mock FB
Support all types of iterables in _query() data
Avoid using mutables as default arguments

See 'Principle of Least Astonishment in Python: The Mutable Default Argument'
for really good references on why you should avoid assigning a mutable as a
default argument unless you really really know what you are doing.

 * http://stackoverflow.com/questions/1132941/least-astonishment-in-python-the-mutable-default-argument
Adding GraphAPI.batch to the docs
Adding FQL support