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
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
fix issue #470, add get_lp function
added const for sum() in accumulator and tests for get_lp for double and var inputs
remove commented out using statement generators
adding lgamma include back into generator to resolve ambiguity
Merge pull request #878 from stan-dev/feature/issue-470-log_prob_fun

Fixes #470. Feature/issue 470 log prob fun