v2.1.0-beta.2

• cache now dumps model json by alias, allowing for @context to be serialized correctly
• added log for deref handler
• restructured start dependency order so that the handshaker runs before other components which make network requests
• temporarily removed handshaker from error handler
• fixed var name typo in sync manager which never matched any nodes to catch up with
• node contact handler now skips partial nodes instead of raising a warning log
• fixed typos