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 develop
completes fix for issue #733, by printing warning and failing if user-defined functions contain void type arguments
updating test model -- had a typo
Merge branch 'bugfix/issue-733-function-void-args' of https://github.com/stan-dev/stan into bugfix/issue-733-function-void-args
rewrote logic of void check for user-defined function args to actually fail when it should
Merge pull request #758 from stan-dev/bugfix/issue-733-function-void-args

Fixes #733. Bugfix/issue 733 function void args