Merge branch 'release/v2.0.0' into develop
removing stan-reference-2.0.0.pdf and doxygen from develop.
Merge pull request #290 from stan-dev/feature/remove_artifacts

removing stan-reference-2.0.0.pdf and doxygen from develop
fixed generated code, updated the call to finite_diff_grad from src/stan/model/util.hpp, added unit test for finite_diff_grad
changed the test_grad call in util to match the test_grad call in v1.3
Merge pull request #302 from stan-dev/hotfix/issue-295-diagnose_not_working

Fixes #295.
fixed multi_normal ONLY ONE FUNCTION SIGNATURE; fixes half of #299
fixed multi_normal tests ONLY ONE FUNCTION SIGNATURE; fixes OTHER half of #299
Merge branch 'hotfix/v2.0.1' of https://github.com/stan-dev/stan into hotfix/v2.0.1
Merge branch 'hotfix/v1.0.1' into feature/issue-299-fix-multinormal
broke multi_normal into component distributions by file with tests broken out
finishes fix for issue #299 -- unit tests for gradients of multi_normal
make all suggested updates to manual, fixing issue #292
Merge pull request #308 from stan-dev/feature/issue-299-fix-multinormal

Fixes #299
Merge pull request #322 from stan-dev/feature/issue-292-manual-fixes-2.0.1

Fixes #292.
updating version numbers from v2.0.0 to v2.0.1
updating makefile to not clean built manual and doxygen doc when running clean-all
updating artifacts to v2.0.1
Merge pull request #324 from stan-dev/hotfix/v2.0.1

Hotfix/v2.0.1