foo
Apply excercise 4 in chapter 7
Add the forgotten exercise 1 in chapter7
Add the missing custom matcher in 8.3.3
Add edit/update page 9.1.1
Fix minor test error in static page
Finish update feature 9.1.3 and fix .gitignore
Add test for unsigned update 9.2.1
Make only valid user can edit and update 9.2.2
Make index page 9.3.1
Propagate dummy users
Add pagination to index with dummy users
Refactor index view (1) 9.3.4
Refactor index view (2) 9.3.4
Add and migirate admin user 9.4.1
Add destroy action for admin 9.4.2
Add missing gems
exercise 1 in 9.6

Note that the test doesn't work well because adding :admin to user_params does not affect anything.
Exercise 2 in 9.4
Exercise 3 in 9.6