Inconsistency between accounts and addresses

[alexkiro]

The pyzor client supports address that have port as string, for example:

>>> str(client.ping(address=("public.pyzor.org", "24441")))
'Code: 200\nDiag: OK\nPV: 2.1\nThread: 65482\n\n'

But this must match the accounts, for example if the accounts uses integers instead, then the correct account is not used. The Client API should be more malleable with this.