All attributes of views are being exposed via Hypergraph

[leotrs]

The stats package was designed so that users could immediately access stats from the main hypergraph object:

>>> H.degree()
{1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 2, 8: 1, 7: 1}

However, this was done by exposing all of IDView's methods (which include stats) but also include others that we don't want to expose via Hypergraph, such as:

>>> H.filterby()
TypeError: IDView.filterby() missing 2 required positional arguments: 'stat' and 'val'

>>> H.neighbors()
TypeError: IDView.neighbors() missing 1 required positional argument: 'id'

>>> H.memberships()
AttributeError: 'dict' object has no attribute 'asdict'