do not use -U username if username not specified
Merge pull request #9 from openteam/do-not-set-stage-var

setting up :stage variable brokes multistage:ensure check
Merge pull request #10 from openteam/set-username-only-if-necessary

do not use -U username if username not specified
Force symbols from deploy.rb into strings to be YAML compatible
Merge pull request #11 from timkelty/force-strings-yaml-compatibility

Force symbols from deploy.rb into strings to be YAML compatible
simple quotes, no escape for mysql inline password
Merge pull request #12 from jobwat/simple-quotes-for-mysql-inline-password

simple quotes, no escape for mysql inline password
Add support for YAML files that contain ERB

Rails by default parses them with ERB first
Merge pull request #14 from agios/erb_support

Add support for YAML files that contain ERB
Merge with upstream