No documentation of the migration's name

[paulocheque]

It must start with 3 numbers, like 001_something.py

[Thorbijoern]

in line 195 of router.py is the regex r"[\d]{3}_[^\.]+\.py$". 3 numbers, underscore, every char except "." for one or more times, ".py" and the end of string.

so... these would be possible: 999_a.py 001_foo_bar-foo.py 001_helloWorld.py and even 1000_a-foobar.py would match