Sciluigi

See also [this release on PyPI](https://pypi.python.org/pypi/sciluigi/0.9.3b4).

Some notable changes in this release:
- Python 3 support
- Support for Amazon S3 data targets

Big thanks to jeffcjohnson for these contributions!

Maintenance release, with mainly some PyLint warnings corrected.

There is more to do, like adding more tests and fixing more pylint issues, but the library works and is used in production already.

This is mainly a bug-fix release, fixing some bugs and minor polish.

**Changes:**
- Added util methods to save/retrieve flat dicts to recordfiles 199f6f1
- Raise exception on nothing returned from workflow() method of Workflo… … ff9e27d
- Update README with Prerequisites and Install sections 54bfee1
- Remove unneccessary log init 6293c9c
- Don't log about logfile path more than once c2cafeb
- Proper spacing around code blocks in README aa8310a
- Bugfix: Must use same treatment of list of command parts in all ex\* f… … 1e028c3
- Handle problem with multiple jobs checking the same folder at the sam… … ab41eb7
- Update text about work in progress, in README

This BETA release is suitable for early-adopters who want to try the library out, and see if it is the right thing for them.

Things might still be rough around the edges (allthough all known edges are smoothed out), and there is still polishing, further testing, and some more advanced features (like sub-workflow support) that remain to be done.

But all in all, it should be ready to take out for a try!