Merge branch 'master' of https://github.com/habi/python
Merge branch 'master' of https://github.com/habi/python
Remove all the cruft at the end

Since 'latexmk -c *.tex' did not clean everything reliably, we just
delete the stuff with a basic for loop at the end.
move frame*.png and mosaic*.png to a common directory, so we have them
ready for compilation.