acu91204 - Enhancements in support of RightNet router

acu58878 - Refactor dispatching to allow for multiple dispatchers

acu58878 - Allow Sender user to build and send packet on own

acu58878 - Add ConnectivityFailure and RetyrableError exceptions

acu58878 - Limit JSON version to 1.7.6 to avoid json_create behavior change

acu58878 - Update rconf config for 1.0 version

acu58878 - Add QueryFailure exception

acu58878 - Make clearer why agent identity is invalid

acu58878 - In Sender only ping mapper if publish returns ids

acu58878 - Fix use of history to deal with early terminate

acu58878 - Extend SecureSerializer to accept additional cues as to how to decrypt a message

@ryanwilliamson @tony-spataro-rs @raphael