fixes #662 es3 compat tests
Merge pull request #663 from buzzdecafe/master

fixes #662 es3 compat tests
fixes #662 for reals
Merge pull request #664 from buzzdecafe/master

fixes #662 for reals
add R.inc and R.dec
Merge pull request #667 from davidchambers/inc-dec

add R.inc and R.dec