Log Message:
Update to version 2.0.0.

Notable changes:
ref. https://github.com/Juniper/py-junos-eznc/releases

 * Now PyEZ will support Console (Telnet/Serial) connection apart from SSH
 * Python >=3.4 support
 * Configuration Tables to Define and Configure Structured Resources
 * JSON Config load
   For devices >=16.1, user can also load JSON config apart from xml/set/text
 * FTP Utility
   Option to use FTP utility to transfer files in addition to existing SCP.
 * Multi RPC error
   If the config being loaded got more then 1 error/warning, PyEZ will
   give all error details to the user
 * Bug fixes
   * dev.cli "invalid command" returned even in case of proper
     command. #498 #492
   * StartShell utility to work on Occam and root users.
   * StartShell run function to return Tuple of last_ok & command output
   * Many other bug fixes.