Finished exercises and projects
Add 'week5/day5/' from commit 'f9029c7f9dc71dcc4addb270516597a6d8557e8d'

git-subtree-dir: week5/day5
git-subtree-mainline: bc4ca9caeb93a3537778f34d387b07edf22fcb42
git-subtree-split: f9029c7f9dc71dcc4addb270516597a6d8557e8d
Partner attribution