Missing period
Backport fixes from gh-pages
Need root access
SIPp will rewrite media IP/Port, so don't require them to construct media
Helper method wait_for_hangup
Allow simpler syntax in YAML (no need for leading colons)
Fix accidentally broken test
Protect against accidental string multiplication

1000 sleeps!
Always require YAML, and never overwrite it
Print updates when compiling
Enable compiling and running the scenario from a CLI program