IPBan 1.7.3

• Fix an issue with override config that would not copy appSettings/add elements if the base config did not also have the same key.
• Attempt to fix an issue where editing the override config frequently could result in the override config not being merged properly.
• Improve sql server negation expression in event viewer check.
• Show source when ip address parse fails and a dns lookup is performed.
• Perform web service call to https://api.ipban.com/myip to get ip address if external ip cannot be found.
• Can add a max count to end of firewall uri rule to allow more than 10k ip addresses.