Allow the results to be exported in a CSV / XLSX format

On a schedule check a set of IPs against the black lists and notify if they are listed.

Implement requests_cache so that subsequent requests are not taxing or slowing down the application

Parameter --max_cache will set how long we hold the cache locally

Requirements: Now needs Postresql

Check to see if the IP has been blackholed using dns lookups

Currently any lists that use CIDR format don't get matched properly. Need to parse these.

1. Collect all the blocks on the page
2. Use the python ip tools to check if the IP is in a listed block
3. Profit?

If the command is running the background for a long time, shoot the results to a defined Slack channel, so the analyst can look away.

Users can pass invalid IP addresses to the system, it has issues with

Add a new function to validate an IP address in octal before checking it...if it's bad skip it.

Need to add the ability to search an entire block of IP addresses.

192.168.1.0/24 for example

Need to add support to search an entire list of IP addresses, supplied by file.

Requirement:
1 IP per line

Provide a function that validates the JSON and all the fields in the feed list to make sure the list is compatible with ipblisted's program logic.

As the subject states, reduce the dependency on external python libs

Should use requests.session() for this instead of a dictionary

# Default settings for requests
        settings = {"url": self.url}

        # If the user supplied a proxy, set the proxy information for requests
        if options.proxy:
            settings["proxies"] = {"http": options.proxy, "https": options.proxy}
            settings["auth"] = HTTPProxyAuth(options.proxy_user, options.proxy_pass)