Version 0.007000 is ready

0.007000 - 2014-11-03
    - Major re-factoring done to how Perl-to-C type inferences are done
    - Most AMQP header data types from AMQP into Perl should be supported.
    - Upgraded the librabbitmq-c version to the latest stable v0.5.2
    - Nested headers are now working