v0.7.0

• MANIFEST.in: add entire docs folder (@jtriley)
• Avoid OverflowError with large ranges (@bd808)
• Add wheels support (@bd808)
• Provide methods for comparison of IpRangeList objects (@jellonek)
• validate_netmask: ensure 32 bit expansion (@bd808)
• Cast input to IpRangeList (@bd808)
• Implement RFC 1924 IPv6 encoding/decoding (@bd808)