MAINT update flake8_diff.sh
MAINT update flake8_diff.sh

Improvements from scikit-learn

karandesai-96/joblib,tomMoral/joblib,tomMoral/joblib,lesteve/joblib,joblib/joblib,karandesai-96/joblib,aabadie/joblib,lesteve/joblib,aabadie/joblib,joblib/joblib