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
numbers out of range throw exception, added test to check exception to unit tests
more error handling on data read in from Rdata files, plus unit tests
reader checks common syntax errors, added unit tests accordingly
Merge pull request #672 from stan-dev/bugfix/670-io-check-too-large-ints

Bugfix/670 io check too large ints; passed code review and tests, good to go