Traversals draft
Drafts
Rel definitions
Support for basic cypher query rendering
Merge branch 'master' into feature_queryset

Conflicts:
	neomodel/relationship.py
Separate from method call
Refactored rendering from ast manipulation
Fix inflation
Fix relation name
Add traversalset abstraction
None existant magic method
Wire in traversal method
Magic methods!
Moving missing type
Add support for LIMIT
Not always true
Copy ast before finalise

- allows re-use of traversal after execution
- probably can be cleaned up some what
Check for none existant rel manager
Refactor out finalise methods
Add support for ordering results