Forensic artifact extraction from squid3 proxy cache and secondary log sources.

• Parse headers and metadata from cached files residing in a squid cache_dir
• Parse metadata from binary cache index cache_dir/swap.state
• Parse secondary log data from squid store.log file

json and csv output is designed to be indexed by log aggregation storage & visualization utlities such as elasticseach/kibana. See squid-cache-extractor-logstash