Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
fixes issue 83, disappearing spaces in printed string literals in models
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-83
Merge pull request #136 from stan-dev/feature/issue-83

Feature/issue 83. Fixes #83.