setup: Python-3.4 support

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
what about something like:
```python
def skipPy340(f):
    @wraps(f)
    def decorator(*args, **kwags):
        if sys.version_info != (3, 4, 0, 'final', 0):
            return f(*args, **kwargs)
       return None
    return decorator

@skipPy340
def test_*(...):
    pass
```