0.9.7 Release

[MaddieM4]

Feature list:

• Remove Python 3.1 support
• Identities are hashable, and comparable for equality.
• Identity.key property - Convenience accessor for str_address(location)
• IdentRefs - Like softlinks for identities
• IdentityCache.filter_by_name(name) - Get all Identities matching a name
• IdentityCache.update_idents([...]) - Store a list of Identities in a cache
• Identity.clone() - Make a distinct copy of an Identity that can be independently modified.
• ejtp-identity new-interactive - Wizard for making new Identity objects
• ejtp-identity dl - Download identities from the DJDNS registry
• Address objects - Addresses are a class now. (postponed until later release)