Exception when parsing "connected since" field

[N-Mi]

It seems my version of OpenVPN (2.5.1) has more fields in the client list than what is expected, which causes an exception while getting the client list from the parser object:

>>> from openvpn_status_parser import OpenVPNStatusParser
>>> import pprint
>>> parser = OpenVPNStatusParser("/tmp/status.log")
>>> pprint.pprint(parser.connected_clients)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/nicolas/git/openvpn-status-parser/openvpn_status_parser/__init__.py", line 141, in connected_clients
    self._parse_file()
  File "/home/nicolas/git/openvpn-status-parser/openvpn_status_parser/__init__.py", line 120, in _parse_file
    self.title_processors[row_title](row)
  File "/home/nicolas/git/openvpn-status-parser/openvpn_status_parser/__init__.py", line 83, in _process_client_list
    self._connected_clients[row[1]]["connected_since"] = (datetime.datetime.fromtimestamp(int(row[-1])))
ValueError: invalid literal for int() with base 10: 'AES-256-CBC'

My OpenVPN server is configured with option "status-version 3".

Here is the (anonymized) status file :

TITLE	OpenVPN 2.5.1 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on May 14 2021
TIME	2021-12-16 16:13:52	1639667632
HEADER	CLIENT_LIST	Common Name	Real Address	Virtual Address	Virtual IPv6 Address	Bytes Received	Bytes Sent	Connected Since	Connected Since (time_t)	Username	Client ID	Peer ID	Data Channel Cipher
CLIENT_LIST	UNDEF	1.2.3.4:56736	10.42.42.2		67638680	45432322	2021-12-14 10:34:46	1639474486	my_user	609	0	AES-256-CBC
HEADER	ROUTING_TABLE	Virtual Address	Common Name	Real Address	Last Ref	Last Ref (time_t)
ROUTING_TABLE	96:03:2d:9d:0d:40@0	UNDEF	1.2.3.4:56736	2021-12-16 16:13:51	1639667631
GLOBAL_STATS	Max bcast/mcast queue length	1
END

The issue is caused because openvpn-status-parser is expecting the "Connected Since (time_t)" to be the last field ( row[-1])

I'll submit a PR fixing this.