* Un-Map IPv4-to-IPv6-Mapped ips before comparing to known proxies/networks. Addresses #358
* Checking both mapped and unmapped versions of IPv4toIPv6 ips. Addresses #358
* Confirm IPv4toIPv6 mapping/unmapping. Addresses #358
Use x-forwarded-for validation to restrict other forwarders.
Rename OverrideHeaderMiddleware to ForwardedHeadersMiddleware.
Fix tests
Fix package version.