Update release notes
Update release notes

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