Features Added:
- Single-RE sw install on multi-RE device using all_re argument to SW.install() #746
- Support platforms which have single-RE ISSU. #740
- Support Config.load() loading a configuration from a URL. #749
- SW.install() enhanced to install from a URL. #751
- Implement uptime property for Device instances. #752/#750
- Facts gathering support for Junos Node Slicing. #760