fix how we call the InstallPackages script

Sometime when booting from USB the kernel doesn't enumerate devices f…

…ast enough, leaving us unable to find

the device we are booting from. Give the kernel some time. Fixes #255

don't try to chroot inside chroot

bump armhf to 5.9.8

readme typo

Fix initramfs encryption

disable kernel console logs during root decrypt

Fix sound in firefox, remove chromium, get xsecurelock from testing

closes #140, #139

reload the root CA certificates after package installation. Fixes #137

update README, fix unmounting sys, dev after installing packages