Node attribute

[melug]

Node has properties attribute. We can access the attributes using it, but can't set. It would be better if we can set like this:
n.properties['name'] = 'Neo'

[versae]

That's true. Actually I have a TODO line in the code for remembering me to do that, but it's not done yet.
By now, you can set the attributes using the regular syntax:
n['name'] = 'Neo'
Instead of
n.properties['name'] = 'Neo'