VOLTTRON 3.0 beta2 release

We are proud to announce the second beta release for the upcoming 3.0 release. The following issue have been addressed.

Addressed issues

• #39 Implement an OpenEIS historian
• #68 Create a mysql/postgres style historian
• #79 Expose rpc methods through the web interface
• #95 and #132 Reorganize the layout of the repository
• #99 Fixed platform historian implementation
• #104 Add ui element for registering platforms
• #126 Move scripts under the ROOT/scripts directory and fix all references.
• #129 Fix websocket volttron log location issue
• #136 Update ActuatorAgent to work with 3.0
• #140 Allow Volttron Central to use tcp addresses for external connections
• #149 Make topic flow better for historian
• #160 #161 Update data publisher

Other fixes/upgrades that weren't documented via github issues

• Fixed Historian to store devices data
• BACnet Driver completed
• ActuatorAgent completed
• Fixed query subsystem to return correct address of platform\