Bug summary

Building the html docs, then running make clean does not remove all the built files, and only removes stuff in the build directory. It should also clean the following directories:

$ git clean -xfd
Removing api/_as_gen/
Removing build/
Removing gallery/
Removing savefig/
Removing sphinxext/__pycache__/
Removing tutorials/

I have no idea how to fix this since the makefile was changed, does anyone else know how?