Wingmonkey

Adds MailChimpSessionSchema class to make session handling in serializers easier and less error prone.

Some environment variable names changed so be aware of this before updating:

MAILCHIMP_API_KEY -> DEFAULT_MAILCHIMP_API_KEY
DATACENTER -> DEFAULT_DATACENTER
MAILCHIMP_ROOT -> DEFAULT_MAILCHIMP_ROOT
MAILCHIMP_EXPORT_ROOT -> DEFAULT_MAILCHIMP_EXPORT_ROOT
BRAND -> DEFAULT_BRAND

BatchOperationResourceCollectionSerializer.read() uses chunks now

Open source this library.
Set up CI build.
Release on Pypi