- expanding `environment` vars in cmd section
- support for connecting to one proxy/bastion host
- better notification text layout
- better error message on private key failing to open
- Added `cron` command to run lists with `cron` time specifed
- Changed `-c` flag to `-f` flag for passing config file
- Modified some config keys
- cmdArgs -> Args
- Got rid of `hosts.config`
- better SSH handling
- respects values in config file
