Update release notes
Update release notes

anntzer/seaborn,lukauskas/seaborn,phobson/seaborn,arokem/seaborn,anntzer/seaborn,sauliusl/seaborn,lukauskas/seaborn,arokem/seaborn,phobson/seaborn,mwaskom/seaborn,mwaskom/seaborn,petebachant/seaborn