removing nesterov options
Merge pull request #36 from stan-dev/feature/issue-35-remove-nesterov

Fixes #35. removing nesterov options
adding failing tests for elapsed time
updating Stan submodule
Merge pull request #38 from stan-dev/feature/issue-21-elapsed-time-printed-twice

Fixes #21. adding failing tests for elapsed time
Remove leading and trailing underscores from header guards
updating README.md
updating CmdStan documentation
updating Stan to v2.4.0
Merge pull request #42 from stan-dev/feature/issue-41-v2.4.0

Fixes #42. Feature/issue 41 v2.4.0
updating CmdStan documentation to correct version
Merge pull request #40 from stan-dev/feature/issue-39-underscore-header-guards

Fixes #39. Remove leading and trailing underscores from header guards
updating stan
Merge branch 'develop' into feature/issue-21-elapsed-time-duplicated

Conflicts:
	stan