Get methods return incorrect

related to #65 

```
q = self._session.query(Methods)
if ids: q = q.filter(Methods.MethodID.in_(ids))
if codes: q = q.filter(Methods.MethodCode.in_(codes))
if type: q = q.filter_by(MethodTypeCV=type)
try:
    q.all()
except:
    return None
```

The query is not being returned.  change `q.all()` to `return q.all()`
