Print a warning when invoked as "charon"
Check for scheduled events when running nixops check.
Retry SQS creation on QueueDeletedRecently error.
Fix old --uuid usage in docs to -d
When the actual public IP of an instance is not the expected elastic IP, attach the expected elastic IP.
Enable logging to syslog via logging module.

Besides the program's stdout/stderr, it will also print the user who
triggered the execution as well as the whole command that was
triggered.

   May 13 19:48:27 laptop nixops[18049]: User: rbvermaa, Command: /nix/store/bjwf978h1f56hkb7c0x40msmp8865879-nixops-0/bin/.nixops-wrapped check -d wordpress
Pass overriden sys.stderr to Deployment object. Use StringIO as baseclass for the stdout/err forwarders, to make sure every file attribute/methods are implemented.
Forget to commit scripts/nixops. Don't forward log to syslog for op_scp