Release 1.3.0

Feature addition:

• support "private" and "dynamic" database access #301 #458

We should be able to use Config as context manager where we can specify mode from
private/exclusive/dynamic/batch/ephemeral.

# mode can be private/dynamic/exclusive/batch
with Config(dev, mode='private') as cu:  
    cu.load('set system services netconf traceoptions file test.log', format='set')
    cu.pdiff()
    cu.commit()

Feature enhancements:

• Support for Feature Velocity releases #442
• Multiple RPC support #338 #453
• Merged Table/View pull requests from user. #441
• Facts gathering to raise only warning in case of exception #459

Bugs Fixed:

• Raise RpcTimeoutError in commit_check #437
• Config load not throwing RpcTimeoutError #443 #444
• Prevented AttributeError upon XML comment #448 #447
• Facts gathering fix for QFX and other specific software releases #450 #463