0.1.23

New features

#101 - Add welcome message to end of provisioning.
#104 - Hide display of skipped tasks.
#106 - Allow environment vars to override defaults.
#110 - Added pantheon_cli role.
#115 - Added default apache_vhosts_ssl.

Issues fixed

#91 - Allow empty config files.
#112 - Install ansible & roles without sudo.

Change to defaults

#92 - Make default db beetbox.
#107 - Bump default drush version to 8.0.3.