* Use set/dict literal syntax
Ran code through [pyupgrade](https://github.com/asottile/pyupgrade). This is
supported in every Python version 2.7+.
* Drop unnecessary string format specification
No need to specify 0,1.. if paramters are passed in order.
* Revert "Drop unnecessary string format specification"
This reverts commit efa5ec85d30ff69f34e5ed93e31343fea7647bcb.
* Undo changes to cloudpickle
Drop use of set literal until cloudpickle uses it.
* Reformat code with YAPF
We need to set up a git pre-push hook to automatically run this stuff.
* Allow numpy arrays and larger objects to be passed by value in task specifications.
* Fix bug.
* Fix bug. Inline all bug numpy object arrays.
* Increase size limit for inlining args in task spec.
* Give numpy init different signatures in Python 2 and Python 3.
* Simplify code.
* Fix test.
* Use import_array1 instead of import_array.
* 4 space indentation for actor.py.
* 4 space indentation for worker.py.
* 4 space indentation for more files.
* 4 space indentation for some test files.
* Check indentation in Travis.
* 4 space indentation for some rl files.
* Fix failure test.
* Fix multi_node_test.
* 4 space indentation for more files.
* 4 space indentation for remaining files.
* Fixes.
Robert Nishihara