Minor
Merge branch 'master' of github.com:materialsvirtuallab/fireworks
Add choice of dump function in lpad. Allows yaml formatted output which is
easier to read for long sequences.
Minor improvements.
Merge branch 'master' of github.com:materialsproject/fireworks
Add relative improts in root __init__.py
Merge pull request #12 from materialsvirtuallab/master

YAML formatted output for lpad. Easier to look at for long lists of data.