add new setter for spine positions so that offset_spines can be called anytime
added offset info to despine docstring
add warning to offset_spine and only move visible spines
add tests for offseting spines with despine
fix bad whitespace from despinse work
updated despine call with offset in aethetics notebook
Add hist_norm argument to distplot
Merge pull request #179 from mwaskom/distplot_optional_norm

Add hist_norm argument to distplot
Add cubehelix_palette function
Merge pull request #180 from mwaskom/cubehelix

Add cubehelix_palette function
Add hexbin_marginals example and tweak cubehelix example
Add cubehelix palette to api index
Add upload-dev rule to Makefile
Add 0.4 release notes to index
Fix cubehelix narrative docs
Merge branch 'spineoffsets-with-despine' of github.com:phobson/seaborn into phobson-spineoffsets-with-despine
Update docs and examples with new spine offset functionality
Add the  option to plotting_context
Merge pull request #182 from mwaskom/scale_font

Add the scale_font option to plotting_context and other functions
Make setup behave more politely about dependencies (GH #169)