Update autotest-cases

Cleaned up comments and formatting

autotest-cases

@@ -1,17 +1,19 @@
-# Basic tests.
-
+# Umlauts and other stuff:
 1 [email protected]
 1 hügo@müller.berlin
+
 # Tricky, but the RFC suggests that this is invalid:
 0 admin@localhost
+
 # Valid if inside the local network:
 1 🎃@emojiguy
 
-# Advanced tests from Wikipedia et al.
-
+# IP addresses:
 1 foo@[192.168.0.1]
 1 foo@[IPv6:::1]
+
 # Valid thanks to quoting:
 1 "very.(),:;<>[]\".VERY.\"very@\\ \"very\".unusual"@strange.example.com
+
 # Seems to be valid according to the RFCs. Wikipedia says otherwise. But there is no obvious reason for that:
 1 " "@provider.tld