Highlights:
- Improved documentation.
- New visualiser page! https://github.com/spotify/luigi/pull/1086, thanks stephenpascoe
- Execution summaries at end of runs! https://github.com/spotify/luigi/pull/1091, thanks nicolehedblom
- Smarter layout algorithm for the SVG dependency graphs, thanks daveFNbuck
- Command line interface now has a useful --help, see https://github.com/spotify/luigi/pull/1276
- Luigi finally has semantic exit codes! https://github.com/spotify/luigi/pull/1264
Contrib:
- Stablization of GCP tools
- AWS EC2 support. https://github.com/spotify/luigi/pull/1317, thanks jfeala
- Sungrid support. https://github.com/spotify/luigi/pull/1124, thanks jfeala (again :))
Scheduling:
- UNIX sockets are now supported, hence also encryption. https://github.com/spotify/luigi/pull/1129, thanks graingert
- Smarter scheduling! https://github.com/spotify/luigi/pull/1272
- Speedup in scheduler. https://github.com/spotify/luigi/pull/1046
- A `--take-lock` option to smoother roll out code changes. https://github.com/spotify/luigi/pull/1137
Deprecations:
- There have been a lot of deprecations of features regarding Parameters. Before upgrading, please consider taking a look at the new [module documentation for parameters](http://luigi.readthedocs.org/en/stable/api/luigi.parameter.html).