It was a bit confusing when it said "use `w -y user@example.com` to sync your mail"

Update domains.csv

Add qq,126,163 mail for Chinese users

Use POSIX-compliant read

Rewrite #520.
Using `read var?'prompt'` is wrong. It is ksh (and zsh) specific.
Using `read -p 'prompt' var` is also wrong. It is bash specific.
Since we cannot assume which sh is implemented,
we should write POSIX-compliant code.

Add kalli.st to domains.csv

Update domains.csv

Update domains.csv

* added anu.edu.au

* found/fixed an out-of-place domain

Add Jagiellonian University student email.

added settings for Czech mail provider seznam.cz and a faculty e-mail for Faculty of Electrical Engineering and Communication, Brno University of Technology

Co-authored-by: Aisha Tammy <aisha@aisha.cc>

Co-authored-by: Luke Smith <luke@lukesmith.xyz>

Today's mutt-wizard does not support the XDG Base Directory specifications (https://wiki.archlinux.org/index.php/XDG_Base_Directory) because it says the user should be able to change the config, cache, data folders etc. using the environmental variables XDG_CONFIG_HOME, XDG_CACHE_HOME, and XDG_DATA_HOME, and instead hard codes the default paths ~/.config, ~/.cache, and ~/.local/share. My commit corrects this.

-E option is cross platform and interprets
pattern as regular expression always

Co-authored-by: Aisha Tammy <aisha@aisha.cc>