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* Implement network/address allocation endpoints for Network objects.
* For database models the following methods have been added:
+ ``get_next_address()`` - Returns a list of next available a addresses
(fixes 49)
+ ``get_next_network()`` - Returns a list of next available networks
matching the provided prefix_length. (fixes 48)
* For the REST API, the following endpoints have been added to Network
objects in detail view (e.g. ``GET /api/sites/1/networks/10/:endpoint1``):
+ ``next_address`` - Returns a list of next available a addresses
+ ``next_network`` - Returns a list of next available networks
matching the provided prefix_length.
+ ``parent`` - Return the parent Network for this Network
+ Updated all of the tree traversal methods to explicitly order results
by (network_address, prefix_length) so that results are in tree order.
+ Corrected a typo in the README file (fixes 69)
+ All new functionality is completely unit-tested!