Make TemplateAliasProcessor work with top-level partials
Merge pull request #550 from cschramm/master

Make TemplateAliasProcessor work with top-level partials
Add framework for optional checks
Add tests for optional checks
Merge pull request #555 from presidentbeef/optional_checks

Optional checks
Don't process sexps in ProcessHelper.class_name

fixes #553
Add test for stack overflow in Util#class_name