Update release notes
Update release notes

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