TST: update travis to use py3.6
TST: update travis to use py3.6
jakereps/qiime-studio,qiime2/qiime-studio-frontend,qiime2/qiime-studio-frontend,jakereps/qiime-studio,qiime2/qiime-studio,qiime2/qiime-studio,jakereps/qiime-studio,qiime2/qiime-studio