Added copy, rename and list methods to S3Client.
Merge pull request #260 from campanja/improve_s3

Add copy, rename and list methods to S3Client.
luigid: allow empty state-path and logdir for development
Merge pull request #261 from miku/fix/empty-options

luigid: allow empty state-path and logdir for development
Document how insignificant parameters work

 * Document how two Tasks with the same params are identical
 * Document how significant=False changes the signature
Merge pull request #262 from onlynone/master

Document how insignificant parameters work
Fix incorrect hadoop msg match when stat'ing file
Merge pull request #264 from daleroberts/master

Fix incorrect hadoop stat msg match
bumped version to 1.0.13 and uploaded to pypi
Add missing information about the first example in README.md
Update hdfs.py

Minimum viable change to allow setting an override to HDFS tmp dir in luigi.
Clean up example: use context manager when opening files (already done elsewhere in the file), use  rather than %s, remove trailing spaces on a number of lines, break lines at under 80 characters
Merge pull request #269 from jeffknupp/master

Add missing information about the first example in README.md; clean up example code
Don't try to mail errors when missing config.
Barebones sphinx setup.

The index page isn't very exciting, yet.
Merge pull request #271 from jcrobak/dont-email-none

Don't try to mail errors when missing config.
Fix the top_artists example
Merge pull request #273 from rantav/top-artists-fix

Fix the top_artists example
Update documentation for luigi.task.
Update documentation for luigi.parameter.