network result summary fails if time horizon > 1

[djohnsonbaugh]

Traceback (most recent call last):
File "main_10bus_id6.py", line 1021, in
print(network.results.summary())
File "C:\Program Files (x86)\Python35-32\lib\site-packages\dem\network.py", line 213, in summary
retval += "%-20s %10.4f\n" % (label, value)
TypeError: only length-1 arrays can be converted to Python scalars

[djohnsonbaugh]

`
Possible update?

def summary(self):
    retval = "Status: " + self.status if self.status else "none"
    if self.status != cvx.OPTIMAL:
        return retval

    retval += "\n"
    retval += "%-40s %10s\n" % ("Terminal", "Power")
    retval += "%-40s %10s\n" % ("--------", "-----")
    for device_terminal, value in self.power.items():
        label = "%s[%d]" % (device_terminal[0].name, device_terminal[1])
        retval += "%-40s" % (label)
        if type(value) == np.float64:
            retval += " %10.4f" % (value)
            retval += "\n"
        else:
            for v in value:
                retval += " %10.4f" % (v)
            retval += "\n"

    retval += "\n"
    retval += "%-20s %10s\n" % ("Net", "Price")
    retval += "%-20s %10s\n" % ("---", "-----")
    for net, value in self.price.items():
        retval += "%-20s" % (net.name)
        if type(value) == np.float64:
            retval += " %10.4f" % (value)
            retval += "\n"
        else:
            for v in value:
                retval += " %10.4f" % (v)
            retval += "\n"
    return retval

`