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
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-867-more-fun-args
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-867-more-fun-args
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-867-more-fun-args
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-867-more-fun-args
Merge branch 'develop' into feature/issue-867-more-fun-args
extends number of allowed arguments, finishing #867
Merge pull request #1036 from stan-dev/feature/issue-867-more-fun-args

Fixes #867. Feature/issue 867 more fun args