added 3 quiz for W5 on S1, 2, 3
fixed a few typos
fixed typos
fixed a question
petites améliorations cosmétiques sur les quiz

celui sur les chemins a des lignes un peu longues mais bon
commentaire d'Arnaud sur l'exo connue / inconnue / composite
Merge branch 'renamings'

Change notebook names in order to be more explicit
QUIZ
renommage formattage -> formatage
fixed typos
Merge branch 'master' of github.com:parmentelat/flotpython

Conflicts:
	W2/S3-Exercices-slicing.ipynb

Resolved the conflict on the signature only
add notes in TODOS
Merge branch 'master' of https://github.com/parmentelat/flotpython
normalized
un essai de symlink sur un notebook pour un libelle + clair